15122850625 has 15 divisors (see below), whose sum is σ = 18901356661. Its totient is φ = 12095821000.

The previous prime is 15122850553. The next prime is 15122850649. The reversal of 15122850625 is 52605822151.

The square root of 15122850625 is 122975.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1185631489 + 13937219136 = 34433^2 + 118056^2 .

It is not a de Polignac number, because 15122850625 - 2²⁵ = 15089296193 is a prime.

It is a super-2 number, since 2×15122850625² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 3071916 + ... + 3076834.

Almost surely, 2^15122850625 is an apocalyptic number.

15122850625 is the 122975-th square number.

15122850625 is the 61488-th centered octagonal number.

It is an amenable number.

15122850625 is a deficient number, since it is larger than the sum of its proper divisors (3778506036).

15122850625 is an frugal number, since it uses more digits than its factorization.

15122850625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9858 (or 4924 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 37.

The spelling of 15122850625 in words is "fifteen billion, one hundred twenty-two million, eight hundred fifty thousand, six hundred twenty-five".