315725 has 12 divisors (see below), whose sum is σ = 399156. Its totient is φ = 247680.

The previous prime is 315703. The next prime is 315739. The reversal of 315725 is 527513.

It can be written as a sum of positive squares in 6 ways, for example, as 5476 + 310249 = 74^2 + 557^2 .

It is a de Polignac number, because none of the positive numbers 2^k-315725 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 315725.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 315725.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1739 + ... + 1911.

It is an arithmetic number, because the mean of its divisors is an integer number (33263).

2³¹⁵⁷²⁵ is an apocalyptic number.

It is an amenable number.

315725 is a deficient number, since it is larger than the sum of its proper divisors (83431).

315725 is a wasteful number, since it uses less digits than its factorization.

315725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256 (or 251 counting only the distinct ones).

The product of its digits is 1050, while the sum is 23.

The square root of 315725 is about 561.8941181397. The cubic root of 315725 is about 68.0930818692.

The spelling of 315725 in words is "three hundred fifteen thousand, seven hundred twenty-five".