725634957 has 4 divisors (see below), whose sum is σ = 967513280. Its totient is φ = 483756636.

The previous prime is 725634941. The next prime is 725634967. The reversal of 725634957 is 759436527.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 725634957 - 2⁴ = 725634941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725634907) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120939157 + ... + 120939162.

It is an arithmetic number, because the mean of its divisors is an integer number (241878320).

Almost surely, 2^725634957 is an apocalyptic number.

It is an amenable number.

725634957 is a deficient number, since it is larger than the sum of its proper divisors (241878323).

725634957 is a wasteful number, since it uses less digits than its factorization.

725634957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241878322.

The product of its digits is 1587600, while the sum is 48.

The square root of 725634957 is about 26937.6123106707. The cubic root of 725634957 is about 898.6130724420.

The spelling of 725634957 in words is "seven hundred twenty-five million, six hundred thirty-four thousand, nine hundred fifty-seven".