725648304 has 40 divisors (see below), whose sum is σ = 1973256640. Its totient is φ = 229151808.

The previous prime is 725648303. The next prime is 725648309. The reversal of 725648304 is 403846527.

It is a happy number.

It is a super-2 number, since 2×725648304² = 1053130922196152832, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (725648303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 396922 + ... + 398745.

It is an arithmetic number, because the mean of its divisors is an integer number (49331416).

Almost surely, 2^725648304 is an apocalyptic number.

It is an amenable number.

725648304 is an abundant number, since it is smaller than the sum of its proper divisors (1247608336).

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

725648304 is a wasteful number, since it uses less digits than its factorization.

725648304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795697 (or 795691 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 39.

The square root of 725648304 is about 26937.8600486379. The cubic root of 725648304 is about 898.6185819686.

The spelling of 725648304 in words is "seven hundred twenty-five million, six hundred forty-eight thousand, three hundred four".