31745715325 has 6 divisors (see below), whose sum is σ = 39364687034. Its totient is φ = 25396572240.

The previous prime is 31745715319. The next prime is 31745715329. The reversal of 31745715325 is 52351754713.

It can be written as a sum of positive squares in 3 ways, for example, as 9816251929 + 21929463396 = 99077^2 + 148086^2 .

It is not a de Polignac number, because 31745715325 - 2³ = 31745715317 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 (31745715329) 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, 634914282 + ... + 634914331.

Almost surely, 2^31745715325 is an apocalyptic number.

It is an amenable number.

31745715325 is a deficient number, since it is larger than the sum of its proper divisors (7618971709).

31745715325 is a wasteful number, since it uses less digits than its factorization.

31745715325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1269828623 (or 1269828618 counting only the distinct ones).

The product of its digits is 441000, while the sum is 43.

The spelling of 31745715325 in words is "thirty-one billion, seven hundred forty-five million, seven hundred fifteen thousand, three hundred twenty-five".