725224036 has 12 divisors (see below), whose sum is σ = 1281708540. Its totient is φ = 359021600.

The previous prime is 725223997. The next prime is 725224043. The reversal of 725224036 is 630422527.

It can be written as a sum of positive squares in 2 ways, for example, as 574081600 + 151142436 = 23960^2 + 12294^2 .

It is a junction number, because it is equal to n+sod(n) for n = 725223989 and 725224007.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 897151 + ... + 897958.

It is an arithmetic number, because the mean of its divisors is an integer number (106809045).

Almost surely, 2^725224036 is an apocalyptic number.

It is an amenable number.

725224036 is a deficient number, since it is larger than the sum of its proper divisors (556484504).

725224036 is a wasteful number, since it uses less digits than its factorization.

725224036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1795214 (or 1795212 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 31.

The square root of 725224036 is about 26929.9839584059. The cubic root of 725224036 is about 898.4434147266.

The spelling of 725224036 in words is "seven hundred twenty-five million, two hundred twenty-four thousand, thirty-six".