315868625 has 16 divisors (see below), whose sum is σ = 396276816. Its totient is φ = 251366400.

The previous prime is 315868621. The next prime is 315868639. The reversal of 315868625 is 526868513.

It can be written as a sum of positive squares in 8 ways, for example, as 74252689 + 241615936 = 8617^2 + 15544^2 .

It is not a de Polignac number, because 315868625 - 2² = 315868621 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (315868621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17579 + ... + 30671.

It is an arithmetic number, because the mean of its divisors is an integer number (24767301).

Almost surely, 2^315868625 is an apocalyptic number.

It is an amenable number.

315868625 is a deficient number, since it is larger than the sum of its proper divisors (80408191).

315868625 is a wasteful number, since it uses less digits than its factorization.

315868625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13301 (or 13291 counting only the distinct ones).

The product of its digits is 345600, while the sum is 44.

The square root of 315868625 is about 17772.6932399116. The cubic root of 315868625 is about 681.0340560694.

The spelling of 315868625 in words is "three hundred fifteen million, eight hundred sixty-eight thousand, six hundred twenty-five".