725662878 has 16 divisors (see below), whose sum is σ = 1451592576. Its totient is φ = 241843160.

The previous prime is 725662871. The next prime is 725662879. The reversal of 725662878 is 878266527.

It is a happy number.

725662878 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×725662878² = 1053173225014485768, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 725662878.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725662871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50575 + ... + 63317.

It is an arithmetic number, because the mean of its divisors is an integer number (90724536).

Almost surely, 2^725662878 is an apocalyptic number.

725662878 is an abundant number, since it is smaller than the sum of its proper divisors (725929698).

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

725662878 is a wasteful number, since it uses less digits than its factorization.

725662878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22239.

The product of its digits is 2257920, while the sum is 51.

The square root of 725662878 is about 26938.1305587452. The cubic root of 725662878 is about 898.6245979129.

The spelling of 725662878 in words is "seven hundred twenty-five million, six hundred sixty-two thousand, eight hundred seventy-eight".