13515080825 has 24 divisors (see below), whose sum is σ = 17199767448. Its totient is φ = 10530490880.

The previous prime is 13515080759. The next prime is 13515080833. The reversal of 13515080825 is 52808051531.

It can be written as a sum of positive squares in 12 ways, for example, as 3464617321 + 10050463504 = 58861^2 + 100252^2 .

It is not a de Polignac number, because 13515080825 - 2¹⁶ = 13515015289 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 144299 + ... + 218751.

It is an arithmetic number, because the mean of its divisors is an integer number (716656977).

Almost surely, 2^13515080825 is an apocalyptic number.

It is an amenable number.

13515080825 is a deficient number, since it is larger than the sum of its proper divisors (3684686623).

13515080825 is a wasteful number, since it uses less digits than its factorization.

13515080825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74653 (or 74648 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 38.

The spelling of 13515080825 in words is "thirteen billion, five hundred fifteen million, eighty thousand, eight hundred twenty-five".