725207618 has 16 divisors (see below), whose sum is σ = 1194851520. Its totient is φ = 328583376.

The previous prime is 725207579. The next prime is 725207621. The reversal of 725207618 is 816702527.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 414005 + ... + 415752.

It is an arithmetic number, because the mean of its divisors is an integer number (74678220).

Almost surely, 2^725207618 is an apocalyptic number.

725207618 is a deficient number, since it is larger than the sum of its proper divisors (469643902).

725207618 is a wasteful number, since it uses less digits than its factorization.

725207618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 829801.

The product of its (nonzero) digits is 47040, while the sum is 38.

The square root of 725207618 is about 26929.6791291690. The cubic root of 725207618 is about 898.4366348653.

The spelling of 725207618 in words is "seven hundred twenty-five million, two hundred seven thousand, six hundred eighteen".