315656525 has 6 divisors (see below), whose sum is σ = 391414122. Its totient is φ = 252525200.

The previous prime is 315656521. The next prime is 315656533. The reversal of 315656525 is 525656513.

It can be written as a sum of positive squares in 3 ways, for example, as 14182756 + 301473769 = 3766^2 + 17363^2 .

It is not a de Polignac number, because 315656525 - 2² = 315656521 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315656521) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6313106 + ... + 6313155.

It is an arithmetic number, because the mean of its divisors is an integer number (65235687).

Almost surely, 2^315656525 is an apocalyptic number.

It is an amenable number.

315656525 is a deficient number, since it is larger than the sum of its proper divisors (75757597).

315656525 is a wasteful number, since it uses less digits than its factorization.

315656525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12626271 (or 12626266 counting only the distinct ones).

The product of its digits is 135000, while the sum is 38.

The square root of 315656525 is about 17766.7252187903. The cubic root of 315656525 is about 680.8815879702.

The spelling of 315656525 in words is "three hundred fifteen million, six hundred fifty-six thousand, five hundred twenty-five".