Factors of 1225

5, 7. As a product: 5^2 × 7^2.

The factors of 1225 are 1, 5, 7, 25, 35, 49, 175, 245, 1225. It has 9 factors.

Factors of 1225

Pick any whole number from 1 to 10,000.

1225 = 5^{2} \times 7^{2}

How to work it out

1
A factor of 1225 is a whole number that divides it with nothing left over. You only need to test the numbers up to √1225 ≈ 35.00; every one that divides gives a pair.
2
The factor pairs are listed in the table below. Together they give 9 factors.
3
Prime factorisation: keep dividing by the smallest prime that fits.
$1225 = 5^{2} \times 7^{2}$
4
Add all the factors: 1 + 5 + 7 + 25 + 35 + 49 + 175 + 245 + 1225 = 1767. Without 1225 itself that is 542, so 1225 is a deficient number.

LaTeX source of the formulas on this page

\[ 1225 = 5^{2} \times 7^{2} \]

What are the factors of 1225?

The factors of 1225 are 1, 5, 7, 25, 35, 49, 175, 245, 1225. It has 9 factors.

What are the prime factors of 1225?

5, 7. As a product: $5^{2}$ × $7^{2}$ .

How many factors does 1225 have?

1225 has 9 factors (5 factor pairs, one of them 35 × 35).

What is the sum of the factors of 1225?

1767.

Is 1225 a prime number?

No. It is divisible by 5, so 1225 = 5 × 245.