725307915 has 16 divisors (see below), whose sum is σ = 1182390048. Its totient is φ = 379531776.

The previous prime is 725307911. The next prime is 725307931. The reversal of 725307915 is 519703527.

725307915 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 725307915 - 2² = 725307911 is a prime.

It is not an unprimeable number, because it can be changed into a prime (725307911) 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, 455374 + ... + 456963.

It is an arithmetic number, because the mean of its divisors is an integer number (73899378).

Almost surely, 2^725307915 is an apocalyptic number.

725307915 is a deficient number, since it is larger than the sum of its proper divisors (457082133).

725307915 is a wasteful number, since it uses less digits than its factorization.

725307915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 912398.

The product of its (nonzero) digits is 66150, while the sum is 39.

The square root of 725307915 is about 26931.5412667006. The cubic root of 725307915 is about 898.4780512096.

The spelling of 725307915 in words is "seven hundred twenty-five million, three hundred seven thousand, nine hundred fifteen".