15915084025 has 27 divisors (see below), whose sum is σ = 20648863501. Its totient is φ = 12167397440.

The previous prime is 15915083999. The next prime is 15915084061. The reversal of 15915084025 is 52048051951.

The square root of 15915084025 is 126155.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 2025990121 + 13889093904 = 45011^2 + 117852^2 .

It is not a de Polignac number, because 15915084025 - 2⁷ = 15915083897 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 14507277 + ... + 14508373.

Almost surely, 2^15915084025 is an apocalyptic number.

15915084025 is the 126155-th square number.

15915084025 is the 63078-th centered octagonal number.

It is an amenable number.

15915084025 is a deficient number, since it is larger than the sum of its proper divisors (4733779476).

15915084025 is an frugal number, since it uses more digits than its factorization.

15915084025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2250 (or 1125 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 40.

The spelling of 15915084025 in words is "fifteen billion, nine hundred fifteen million, eighty-four thousand, twenty-five".