315515560625 has 10 divisors (see below), whose sum is σ = 394268245338. Its totient is φ = 252412448000.

The previous prime is 315515560537. The next prime is 315515560627. The reversal of 315515560625 is 526065515513.

It can be written as a sum of positive squares in 5 ways, for example, as 116292594289 + 199222966336 = 341017^2 + 446344^2 .

It is not a de Polignac number, because 315515560625 - 2¹² = 315515556529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (315515560627) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 252411824 + ... + 252413073.

Almost surely, 2^315515560625 is an apocalyptic number.

It is an amenable number.

315515560625 is a deficient number, since it is larger than the sum of its proper divisors (78752684713).

315515560625 is an frugal number, since it uses more digits than its factorization.

315515560625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504824917 (or 504824902 counting only the distinct ones).

The product of its (nonzero) digits is 675000, while the sum is 44.

The spelling of 315515560625 in words is "three hundred fifteen billion, five hundred fifteen million, five hundred sixty thousand, six hundred twenty-five".