725615018 has 8 divisors (see below), whose sum is σ = 1098990048. Its totient is φ = 359285004.

The previous prime is 725614987. The next prime is 725615027. The reversal of 725615018 is 810516527.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1760996 + ... + 1761407.

It is an arithmetic number, because the mean of its divisors is an integer number (137373756).

Almost surely, 2^725615018 is an apocalyptic number.

725615018 is a deficient number, since it is larger than the sum of its proper divisors (373375030).

725615018 is a wasteful number, since it uses less digits than its factorization.

725615018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3522508.

The product of its (nonzero) digits is 16800, while the sum is 35.

The square root of 725615018 is about 26937.2422122236. The cubic root of 725615018 is about 898.6048416689.

The spelling of 725615018 in words is "seven hundred twenty-five million, six hundred fifteen thousand, eighteen".