13491925 has 6 divisors (see below), whose sum is σ = 16730018. Its totient is φ = 10793520.

The previous prime is 13491893. The next prime is 13491937. The reversal of 13491925 is 52919431.

It can be written as a sum of positive squares in 3 ways, for example, as 1423249 + 12068676 = 1193^2 + 3474^2 .

It is not a de Polignac number, because 13491925 - 2⁵ = 13491893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 269814 + ... + 269863.

Almost surely, 2^13491925 is an apocalyptic number.

It is an amenable number.

13491925 is a deficient number, since it is larger than the sum of its proper divisors (3238093).

13491925 is an equidigital number, since it uses as much as digits as its factorization.

13491925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539687 (or 539682 counting only the distinct ones).

The product of its digits is 9720, while the sum is 34.

The square root of 13491925 is about 3673.1355814889. The cubic root of 13491925 is about 238.0626732764.

The spelling of 13491925 in words is "thirteen million, four hundred ninety-one thousand, nine hundred twenty-five".