725568828 has 12 divisors (see below), whose sum is σ = 1692993960. Its totient is φ = 241856272.

The previous prime is 725568821. The next prime is 725568829. The reversal of 725568828 is 828865527.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725568821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30232023 + ... + 30232046.

It is an arithmetic number, because the mean of its divisors is an integer number (141082830).

Almost surely, 2^725568828 is an apocalyptic number.

It is an amenable number.

725568828 is an abundant number, since it is smaller than the sum of its proper divisors (967425132).

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

725568828 is a wasteful number, since it uses less digits than its factorization.

725568828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60464076 (or 60464074 counting only the distinct ones).

The product of its digits is 2150400, while the sum is 51.

The square root of 725568828 is about 26936.3848353858. The cubic root of 725568828 is about 898.5857739643.

The spelling of 725568828 in words is "seven hundred twenty-five million, five hundred sixty-eight thousand, eight hundred twenty-eight".