15723906025 has 27 divisors (see below), whose sum is σ = 20171822853. Its totient is φ = 12158299200.

The previous prime is 15723906007. The next prime is 15723906073. The reversal of 15723906025 is 52060932751.

The square root of 15723906025 is 125395.

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 1286441689 + 14437464336 = 35867^2 + 120156^2 .

It is not a de Polignac number, because 15723906025 - 2¹⁷ = 15723774953 is a prime.

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, 19435821 + ... + 19436629.

Almost surely, 2^15723906025 is an apocalyptic number.

15723906025 is the 125395-th square number.

15723906025 is the 62698-th centered octagonal number.

It is an amenable number.

15723906025 is a deficient number, since it is larger than the sum of its proper divisors (4447916828).

15723906025 is an frugal number, since it uses more digits than its factorization.

15723906025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1690 (or 845 counting only the distinct ones).

The product of its (nonzero) digits is 113400, while the sum is 40.

The spelling of 15723906025 in words is "fifteen billion, seven hundred twenty-three million, nine hundred six thousand, twenty-five".