725079990 has 32 divisors (see below), whose sum is σ = 1756164960. Its totient is φ = 191579904.

The previous prime is 725079989. The next prime is 725080001. The reversal of 725079990 is 99970527.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107599 + ... + 114138.

It is an arithmetic number, because the mean of its divisors is an integer number (54880155).

Almost surely, 2^725079990 is an apocalyptic number.

725079990 is an abundant number, since it is smaller than the sum of its proper divisors (1031084970).

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

725079990 is a wasteful number, since it uses less digits than its factorization.

725079990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221856.

The product of its (nonzero) digits is 357210, while the sum is 48.

The square root of 725079990 is about 26927.3093717141. The cubic root of 725079990 is about 898.3839270175.

The spelling of 725079990 in words is "seven hundred twenty-five million, seventy-nine thousand, nine hundred ninety".