725590831 has 8 divisors (see below), whose sum is σ = 851659040. Its totient is φ = 605125728.

The previous prime is 725590807. The next prime is 725590837. The reversal of 725590831 is 138095527.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 725590831 - 2⁵ = 725590799 is a prime.

It is a super-2 number, since 2×725590831² = 1052964108062541122, 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 (725590837) 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 7 ways as a sum of consecutive naturals, for example, 1400496 + ... + 1401013.

It is an arithmetic number, because the mean of its divisors is an integer number (106457380).

Almost surely, 2^725590831 is an apocalyptic number.

725590831 is a deficient number, since it is larger than the sum of its proper divisors (126068209).

725590831 is a wasteful number, since it uses less digits than its factorization.

725590831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2801553.

The product of its (nonzero) digits is 75600, while the sum is 40.

The square root of 725590831 is about 26936.7932575502. The cubic root of 725590831 is about 898.5948571287.

The spelling of 725590831 in words is "seven hundred twenty-five million, five hundred ninety thousand, eight hundred thirty-one".