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    Factors of 1225

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    What are the Factors of 1,225?

    Answer

    Factors of 1,225:
    1, 5, 7, 25, 35, 49, 175, 245, 1225

    9 factors · 1225 = 52 × 72 · composite

    Underlined — prime: 5, 7 · 1 — neither prime nor composite · others — composite

    Factor pairs of 1,225

    √1225 = 351572535491752451225

    5 pairs: 1 × 1225 · 5 × 245 · 7 × 175 · 25 × 49 · 35 × 35

    35 × 35 is a pair of one factor — that is why 1225 has an odd number of factors, 9.

    1225 = 52 × 72 → (2 + 1) × (2 + 1) = 9 factors: add 1 to each exponent and multiply.

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    Factors of 1225. Factors of 1,225: full list and factor pairs.
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    Factors Table

    NumberFactors
    1,1551, 3, 5, 7, 11, 15, 21, 33, 35, 55, 77, 105, 165, 231, 385, 1155
    1,1601, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 145, 232, 290, 580, 1160
    1,1651, 5, 233, 1165
    1,1671, 3, 389, 1167
    1,1701, 2, 3, 5, 6, 9, 10, 13, 15, 18, 26, 30, 39, 45, 65, 78, 90, 117, 130, 195, 234, 390, 585, 1170
    1,1751, 5, 25, 47, 235, 1175
    1,1801, 2, 4, 5, 10, 20, 59, 118, 236, 295, 590, 1180
    1,1851, 3, 5, 15, 79, 237, 395, 1185
    1,1901, 2, 5, 7, 10, 14, 17, 34, 35, 70, 85, 119, 170, 238, 595, 1190
    1,1951, 5, 239, 1195
    1,2001, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 25, 30, 40, 48, 50, 60, 75, 80, 100, 120, 150, 200, 240, 300, 400, 600, 1200
    1,2051, 5, 241, 1205
    1,2101, 2, 5, 10, 11, 22, 55, 110, 121, 242, 605, 1210
    1,2151, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 1215
    1,2201, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220
    1,2251, 5, 7, 25, 35, 49, 175, 245, 1225
    1,2301, 2, 3, 5, 6, 10, 15, 30, 41, 82, 123, 205, 246, 410, 615, 1230
    1,2351, 5, 13, 19, 65, 95, 247, 1235
    1,2401, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240
    1,2451, 3, 5, 15, 83, 249, 415, 1245
    1,2501, 2, 5, 10, 25, 50, 125, 250, 625, 1250
    1,2551, 5, 251, 1255
    1,2601, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260
    1,2651, 5, 11, 23, 55, 115, 253, 1265
    1,2701, 2, 5, 10, 127, 254, 635, 1270
    1,2751, 3, 5, 15, 17, 25, 51, 75, 85, 255, 425, 1275
    1,2801, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280
    1,2841, 2, 3, 4, 6, 12, 107, 214, 321, 428, 642, 1284
    1,2851, 5, 257, 1285
    1,2871, 3, 9, 11, 13, 33, 39, 99, 117, 143, 429, 1287
    Recalculate with different values ↑

    FAQ

    What are the Factors of 1,225?

    Factors of 1,225: 1, 5, 7, 25, 35, 49, 175, 245, 1225

    How many factors does 1,225 have?

    Number 1,225 has 9 factors

    How many Factor Pairs does 1,225 have?

    Number 1,225 has 5 factor pairs

    Is 1,225 a prime or composite number?

    Composite: 1225 = 5² × 7², so it has 9 factors — a prime has exactly two.

    How many factors does 1,225 have excluding 1 and 1,225?

    7: 5, 7, 25, 35, 49, 175 and 245.

    Why does 1,225 have an odd number of factors?

    1,225 is a perfect square: in the pair 35 × 35 the factor 35 pairs with itself, so the 9 factors are 4 pairs plus 35.

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