725073840 has 60 divisors (see below), whose sum is σ = 2435042064. Its totient is φ = 193352832.

The previous prime is 725073829. The next prime is 725073857. The reversal of 725073840 is 48370527.

725073840 is a `hidden beast` number, since 72 + 507 + 3 + 84 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 725073795 and 725073804.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 502804 + ... + 504243.

Almost surely, 2^725073840 is an apocalyptic number.

It is an amenable number.

725073840 is an abundant number, since it is smaller than the sum of its proper divisors (1709968224).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

725073840 is a wasteful number, since it uses less digits than its factorization.

725073840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1007066 (or 1007057 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 725073840 is about 26927.1951751385. The cubic root of 725073840 is about 898.3813870326.

The spelling of 725073840 in words is "seven hundred twenty-five million, seventy-three thousand, eight hundred forty".