725815940731 has 12 divisors (see below), whose sum is σ = 844332310920. Its totient is φ = 622116300960.

The previous prime is 725815940713. The next prime is 725815940747. The reversal of 725815940731 is 137049518527.

725815940731 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 725815940731 - 2³⁵ = 691456202363 is a prime.

It is a super-2 number, since 2×725815940731² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (725815941731) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3435775 + ... + 3640903.

It is an arithmetic number, because the mean of its divisors is an integer number (70361025910).

Almost surely, 2^725815940731 is an apocalyptic number.

725815940731 is a deficient number, since it is larger than the sum of its proper divisors (118516370189).

725815940731 is a wasteful number, since it uses less digits than its factorization.

725815940731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277354 (or 277347 counting only the distinct ones).

The product of its (nonzero) digits is 2116800, while the sum is 52.

The spelling of 725815940731 in words is "seven hundred twenty-five billion, eight hundred fifteen million, nine hundred forty thousand, seven hundred thirty-one".