315656625 has 16 divisors (see below), whose sum is σ = 525253248. Its totient is φ = 168350000.

The previous prime is 315656611. The next prime is 315656641. The reversal of 315656625 is 526656513.

It is not a de Polignac number, because 315656625 - 2¹⁵ = 315623857 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 420501 + ... + 421250.

It is an arithmetic number, because the mean of its divisors is an integer number (32828328).

Almost surely, 2^315656625 is an apocalyptic number.

It is an amenable number.

315656625 is a deficient number, since it is larger than the sum of its proper divisors (209596623).

315656625 is an equidigital number, since it uses as much as digits as its factorization.

315656625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 841769 (or 841759 counting only the distinct ones).

The product of its digits is 162000, while the sum is 39.

The square root of 315656625 is about 17766.7280330397. The cubic root of 315656625 is about 680.8816598713.

The spelling of 315656625 in words is "three hundred fifteen million, six hundred fifty-six thousand, six hundred twenty-five".