315561635450625 has 40 divisors (see below), whose sum is σ = 525779004161664. Its totient is φ = 168295939480000.

The previous prime is 315561635450623. The next prime is 315561635450641. The reversal of 315561635450625 is 526054536165513.

It is not a de Polignac number, because 315561635450625 - 2¹ = 315561635450623 is a prime.

It is a hoax number, since the sum of its digits (57) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (315561635450623) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 87063352 + ... + 90615398.

Almost surely, 2^{315561635450625} is an apocalyptic number.

It is an amenable number.

315561635450625 is a deficient number, since it is larger than the sum of its proper divisors (210217368711039).

315561635450625 is an equidigital number, since it uses as much as digits as its factorization.

315561635450625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3599451 (or 3599436 counting only the distinct ones).

The product of its (nonzero) digits is 48600000, while the sum is 57.

The spelling of 315561635450625 in words is "three hundred fifteen trillion, five hundred sixty-one billion, six hundred thirty-five million, four hundred fifty thousand, six hundred twenty-five".