725031818 has 16 divisors (see below), whose sum is σ = 1245102144. Its totient is φ = 310180320.

The previous prime is 725031799. The next prime is 725031841. The reversal of 725031818 is 818130527.

It is a super-2 number, since 2×725031818² = 1051342274224770248, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37355 + ... + 53342.

It is an arithmetic number, because the mean of its divisors is an integer number (77818884).

Almost surely, 2^725031818 is an apocalyptic number.

725031818 is a deficient number, since it is larger than the sum of its proper divisors (520070326).

725031818 is a wasteful number, since it uses less digits than its factorization.

725031818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91277.

The product of its (nonzero) digits is 13440, while the sum is 35.

The square root of 725031818 is about 26926.4148746171. The cubic root of 725031818 is about 898.3640313235.

The spelling of 725031818 in words is "seven hundred twenty-five million, thirty-one thousand, eight hundred eighteen".