725318659 has 16 divisors (see below), whose sum is σ = 821812320. Its totient is φ = 635523840.

The previous prime is 725318611. The next prime is 725318677. The reversal of 725318659 is 956813527.

It is not a de Polignac number, because 725318659 - 2¹⁷ = 725187587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (725318359) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1332 + ... + 38110.

It is an arithmetic number, because the mean of its divisors is an integer number (51363270).

Almost surely, 2^725318659 is an apocalyptic number.

725318659 is a deficient number, since it is larger than the sum of its proper divisors (96493661).

725318659 is a wasteful number, since it uses less digits than its factorization.

725318659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36870.

The product of its digits is 453600, while the sum is 46.

The square root of 725318659 is about 26931.7407346796. The cubic root of 725318659 is about 898.4824875786.

The spelling of 725318659 in words is "seven hundred twenty-five million, three hundred eighteen thousand, six hundred fifty-nine".