15115625525 has 144 divisors (see below), whose sum is σ = 25966588032. Its totient is φ = 8488972800.

The previous prime is 15115625501. The next prime is 15115625533. The reversal of 15115625525 is 52552651151.

It is not a de Polignac number, because 15115625525 - 2⁸ = 15115625269 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 11836187 + ... + 11837463.

It is an arithmetic number, because the mean of its divisors is an integer number (180323528).

Almost surely, 2^15115625525 is an apocalyptic number.

It is an amenable number.

15115625525 is a deficient number, since it is larger than the sum of its proper divisors (10850962507).

15115625525 is a wasteful number, since it uses less digits than its factorization.

15115625525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1372 (or 1356 counting only the distinct ones).

The product of its digits is 75000, while the sum is 38.

The spelling of 15115625525 in words is "fifteen billion, one hundred fifteen million, six hundred twenty-five thousand, five hundred twenty-five".