315745725 has 24 divisors (see below), whose sum is σ = 544732992. Its totient is φ = 161075200.

The previous prime is 315745723. The next prime is 315745739. The reversal of 315745725 is 527547513.

It is a happy number.

It is not a de Polignac number, because 315745725 - 2¹ = 315745723 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315745721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 89796 + ... + 93245.

It is an arithmetic number, because the mean of its divisors is an integer number (22697208).

Almost surely, 2^315745725 is an apocalyptic number.

It is an amenable number.

315745725 is a deficient number, since it is larger than the sum of its proper divisors (228987267).

315745725 is a wasteful number, since it uses less digits than its factorization.

315745725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183077 (or 183072 counting only the distinct ones).

The product of its digits is 147000, while the sum is 39.

The square root of 315745725 is about 17769.2353521473. The cubic root of 315745725 is about 680.9457177155.

The spelling of 315745725 in words is "three hundred fifteen million, seven hundred forty-five thousand, seven hundred twenty-five".