725647736 has 16 divisors (see below), whose sum is σ = 1484279640. Its totient is φ = 329839840.

The previous prime is 725647717. The next prime is 725647789. The reversal of 725647736 is 637746527.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4122911 + ... + 4123086.

Almost surely, 2^725647736 is an apocalyptic number.

It is an amenable number.

725647736 is an abundant number, since it is smaller than the sum of its proper divisors (758631904).

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

725647736 is a wasteful number, since it uses less digits than its factorization.

725647736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8246014 (or 8246010 counting only the distinct ones).

The product of its digits is 1481760, while the sum is 47.

The square root of 725647736 is about 26937.8495058533. The cubic root of 725647736 is about 898.6183475044.

The spelling of 725647736 in words is "seven hundred twenty-five million, six hundred forty-seven thousand, seven hundred thirty-six".