315421525 has 6 divisors (see below), whose sum is σ = 391122722. Its totient is φ = 252337200.

The previous prime is 315421511. The next prime is 315421531. The reversal of 315421525 is 525124513.

It can be written as a sum of positive squares in 3 ways, for example, as 1387684 + 314033841 = 1178^2 + 17721^2 .

It is not a de Polignac number, because 315421525 - 2⁹ = 315421013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 315421493 and 315421502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6308406 + ... + 6308455.

Almost surely, 2^315421525 is an apocalyptic number.

It is an amenable number.

315421525 is a deficient number, since it is larger than the sum of its proper divisors (75701197).

315421525 is a wasteful number, since it uses less digits than its factorization.

315421525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12616871 (or 12616866 counting only the distinct ones).

The product of its digits is 6000, while the sum is 28.

The square root of 315421525 is about 17760.1105007824. The cubic root of 315421525 is about 680.7125784252.

The spelling of 315421525 in words is "three hundred fifteen million, four hundred twenty-one thousand, five hundred twenty-five".