725978466 has 12 divisors (see below), whose sum is σ = 1572953382. Its totient is φ = 241992816.

The previous prime is 725978459. The next prime is 725978521. The reversal of 725978466 is 664879527.

725978466 is a `hidden beast` number, since 7 + 2 + 597 + 8 + 46 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 720117225 + 5861241 = 26835^2 + 2421^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20166051 + ... + 20166086.

Almost surely, 2^725978466 is an apocalyptic number.

725978466 is an abundant number, since it is smaller than the sum of its proper divisors (846974916).

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

725978466 is a wasteful number, since it uses less digits than its factorization.

725978466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40332145 (or 40332142 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 54.

The square root of 725978466 is about 26943.9875668024. The cubic root of 725978466 is about 898.7548484956.

The spelling of 725978466 in words is "seven hundred twenty-five million, nine hundred seventy-eight thousand, four hundred sixty-six".