725854078978 has 16 divisors (see below), whose sum is σ = 1309811872320. Its totient is φ = 294707671056.

The previous prime is 725854078907. The next prime is 725854078987. The reversal of 725854078978 is 879870458527.

It is a happy number.

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, 1364387101 + ... + 1364387632.

It is an arithmetic number, because the mean of its divisors is an integer number (81863242020).

Almost surely, 2^725854078978 is an apocalyptic number.

725854078978 is a deficient number, since it is larger than the sum of its proper divisors (583957793342).

725854078978 is a wasteful number, since it uses less digits than its factorization.

725854078978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2728774761.

The product of its (nonzero) digits is 316108800, while the sum is 70.

The spelling of 725854078978 in words is "seven hundred twenty-five billion, eight hundred fifty-four million, seventy-eight thousand, nine hundred seventy-eight".