725871831 has 16 divisors (see below), whose sum is σ = 1049757408. Its totient is φ = 444339200.

The previous prime is 725871821. The next prime is 725871833. The reversal of 725871831 is 138178527.

It is not a de Polignac number, because 725871831 - 2⁶ = 725871767 is a prime.

It is a super-2 number, since 2×725871831² = 1053779830078585122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725871833) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 171480 + ... + 175661.

It is an arithmetic number, because the mean of its divisors is an integer number (65609838).

Almost surely, 2^725871831 is an apocalyptic number.

725871831 is a deficient number, since it is larger than the sum of its proper divisors (323885577).

725871831 is a wasteful number, since it uses less digits than its factorization.

725871831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347202.

The product of its digits is 94080, while the sum is 42.

The square root of 725871831 is about 26942.0086667643. The cubic root of 725871831 is about 898.7108419488.

The spelling of 725871831 in words is "seven hundred twenty-five million, eight hundred seventy-one thousand, eight hundred thirty-one".