725276624 has 20 divisors (see below), whose sum is σ = 1409215236. Its totient is φ = 361608192.

The previous prime is 725276611. The next prime is 725276639. The reversal of 725276624 is 426672527.

It can be written as a sum of positive squares in 2 ways, for example, as 393308224 + 331968400 = 19832^2 + 18220^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58559 + ... + 69854.

Almost surely, 2^725276624 is an apocalyptic number.

It is an amenable number.

725276624 is a deficient number, since it is larger than the sum of its proper divisors (683938612).

725276624 is a wasteful number, since it uses less digits than its factorization.

725276624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128774 (or 128768 counting only the distinct ones).

The product of its digits is 282240, while the sum is 41.

The square root of 725276624 is about 26930.9603245038. The cubic root of 725276624 is about 898.4651304071.

The spelling of 725276624 in words is "seven hundred twenty-five million, two hundred seventy-six thousand, six hundred twenty-four".