725808866 has 16 divisors (see below), whose sum is σ = 1120583040. Its totient is φ = 352432080.

The previous prime is 725808857. The next prime is 725808869. The reversal of 725808866 is 668808527.

It is not an unprimeable number, because it can be changed into a prime (725808869) 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, 28016 + ... + 47291.

It is an arithmetic number, because the mean of its divisors is an integer number (70036440).

Almost surely, 2^725808866 is an apocalyptic number.

725808866 is a deficient number, since it is larger than the sum of its proper divisors (394774174).

725808866 is a wasteful number, since it uses less digits than its factorization.

725808866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75449.

The product of its (nonzero) digits is 1290240, while the sum is 50.

The square root of 725808866 is about 26940.8401131071. The cubic root of 725808866 is about 898.6848552837.

The spelling of 725808866 in words is "seven hundred twenty-five million, eight hundred eight thousand, eight hundred sixty-six".