5156720725 has 24 divisors (see below), whose sum is σ = 6890852360. Its totient is φ = 3805470720.

The previous prime is 5156720713. The next prime is 5156720749. The reversal of 5156720725 is 5270276515.

It can be written as a sum of positive squares in 12 ways, for example, as 3752420049 + 1404300676 = 61257^2 + 37474^2 .

It is not a de Polignac number, because 5156720725 - 2²³ = 5148332117 is a prime.

It is a congruent 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, 573061 + ... + 581989.

Almost surely, 2^5156720725 is an apocalyptic number.

It is an amenable number.

5156720725 is a deficient number, since it is larger than the sum of its proper divisors (1734131635).

5156720725 is a wasteful number, since it uses less digits than its factorization.

5156720725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10729 (or 10724 counting only the distinct ones).

The product of its (nonzero) digits is 147000, while the sum is 40.

The square root of 5156720725 is about 71810.3107151055. The cubic root of 5156720725 is about 1727.6583781693.

The spelling of 5156720725 in words is "five billion, one hundred fifty-six million, seven hundred twenty thousand, seven hundred twenty-five".