Factors of 25

The factors of 25 are 1, 5 and 25. That is 3 factors in total.

A factor of 25 is a whole number that divides 25 exactly, with no remainder. 25 is a composite number because it has factors other than 1 and itself.

Factor pairs of 25

Two numbers that multiply to give 25:

1 × 25 = 25
5 × 5 = 25

Prime factorization of 25

25 = 5 × 5 = 5². The prime factors of 25 are 5.

Quick facts about 25

Is 25 prime? No.
Even or odd: odd.
Sum of its factors: 1 + 5 + 25 = 31.
25 is a perfect square (5 × 5), so it has an odd number of factors.

Factors of nearby numbers

Number	Factors
21	1, 3, 7, 21
22	1, 2, 11, 22
23	1, 23
24	1, 2, 3, 4, 6, 8, 12, 24
26	1, 2, 13, 26
27	1, 3, 9, 27
28	1, 2, 4, 7, 14, 28
29	1, 29

More about 25: 25 squared · square root of 25 · 25 in binary · 25 in Roman numerals.

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