13642625 has 8 divisors (see below), whose sum is σ = 17026152. Its totient is φ = 10914000.

The previous prime is 13642613. The next prime is 13642631. The reversal of 13642625 is 52624631.

It can be written as a sum of positive squares in 4 ways, for example, as 107584 + 13535041 = 328^2 + 3679^2 .

It is not a de Polignac number, because 13642625 - 2⁴ = 13642609 is a prime.

It is a super-2 number, since 2×13642625² = 372242433781250, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 54446 + ... + 54695.

It is an arithmetic number, because the mean of its divisors is an integer number (2128269).

Almost surely, 2^13642625 is an apocalyptic number.

It is an amenable number.

13642625 is a deficient number, since it is larger than the sum of its proper divisors (3383527).

13642625 is an equidigital number, since it uses as much as digits as its factorization.

13642625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109156 (or 109146 counting only the distinct ones).

The product of its digits is 8640, while the sum is 29.

The square root of 13642625 is about 3693.5924247269. The cubic root of 13642625 is about 238.9457519426.

The spelling of 13642625 in words is "thirteen million, six hundred forty-two thousand, six hundred twenty-five".