13031707725 has 18 divisors (see below), whose sum is σ = 23341236906. Its totient is φ = 6950244000.

The previous prime is 13031707693. The next prime is 13031707837. The reversal of 13031707725 is 52770713031.

It can be written as a sum of positive squares in 3 ways, for example, as 642014244 + 12389693481 = 25338^2 + 111309^2 .

It is not a de Polignac number, because 13031707725 - 2⁵ = 13031707693 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13031707725.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 28959126 + ... + 28959575.

Almost surely, 2^13031707725 is an apocalyptic number.

13031707725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13031707725 is a deficient number, since it is larger than the sum of its proper divisors (10309529181).

13031707725 is a wasteful number, since it uses less digits than its factorization.

13031707725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57918717 (or 57918709 counting only the distinct ones).

The product of its (nonzero) digits is 30870, while the sum is 36.

The spelling of 13031707725 in words is "thirteen billion, thirty-one million, seven hundred seven thousand, seven hundred twenty-five".