725881892 has 12 divisors (see below), whose sum is σ = 1270694796. Its totient is φ = 362826240.

The previous prime is 725881889. The next prime is 725881907. The reversal of 725881892 is 298188527.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 655052836 + 70829056 = 25594^2 + 8416^2 .

It is a super-2 number, since 2×725881892² = 1053809042266999328, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 725881892.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13553 + ... + 40440.

It is an arithmetic number, because the mean of its divisors is an integer number (105891233).

Almost surely, 2^725881892 is an apocalyptic number.

It is an amenable number.

725881892 is a deficient number, since it is larger than the sum of its proper divisors (544812904).

725881892 is a wasteful number, since it uses less digits than its factorization.

725881892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57358 (or 57356 counting only the distinct ones).

The product of its digits is 645120, while the sum is 50.

The square root of 725881892 is about 26942.1953819654. The cubic root of 725881892 is about 898.7149941456.

The spelling of 725881892 in words is "seven hundred twenty-five million, eight hundred eighty-one thousand, eight hundred ninety-two".