13634725 has 12 divisors (see below), whose sum is σ = 18208036. Its totient is φ = 10068480.

The previous prime is 13634717. The next prime is 13634743. The reversal of 13634725 is 52743631.

It can be written as a sum of positive squares in 6 ways, for example, as 2169729 + 11464996 = 1473^2 + 3386^2 .

It is not a de Polignac number, because 13634725 - 2³ = 13634717 is a prime.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

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 11 ways as a sum of consecutive naturals, for example, 20652 + ... + 21301.

Almost surely, 2^13634725 is an apocalyptic number.

It is an amenable number.

13634725 is a deficient number, since it is larger than the sum of its proper divisors (4573311).

13634725 is a wasteful number, since it uses less digits than its factorization.

13634725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41976 (or 41971 counting only the distinct ones).

The product of its digits is 15120, while the sum is 31.

The square root of 13634725 is about 3692.5228503017. The cubic root of 13634725 is about 238.8996211351.

The spelling of 13634725 in words is "thirteen million, six hundred thirty-four thousand, seven hundred twenty-five".