725972831 has 4 divisors (see below), whose sum is σ = 726138000. Its totient is φ = 725807664.

The previous prime is 725972813. The next prime is 725972833. The reversal of 725972831 is 138279527.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 725972831 - 2¹⁴ = 725956447 is a prime.

It is a super-2 number, since 2×725972831² = 1054073102700309122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725972833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75806 + ... + 84843.

It is an arithmetic number, because the mean of its divisors is an integer number (181534500).

Almost surely, 2^725972831 is an apocalyptic number.

725972831 is a deficient number, since it is larger than the sum of its proper divisors (165169).

725972831 is a wasteful number, since it uses less digits than its factorization.

725972831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165168.

The product of its digits is 211680, while the sum is 44.

The square root of 725972831 is about 26943.8829978160. The cubic root of 725972831 is about 898.7525231297.

The spelling of 725972831 in words is "seven hundred twenty-five million, nine hundred seventy-two thousand, eight hundred thirty-one".