725554636 has 6 divisors (see below), whose sum is σ = 1269720620. Its totient is φ = 362777316.

The previous prime is 725554607. The next prime is 725554637. The reversal of 725554636 is 636455527.

It is a junction number, because it is equal to n+sod(n) for n = 725554592 and 725554601.

It is not an unprimeable number, because it can be changed into a prime (725554637) by changing a digit.

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 as a sum of consecutive naturals, namely, 90694326 + ... + 90694333.

Almost surely, 2^725554636 is an apocalyptic number.

It is an amenable number.

725554636 is a deficient number, since it is larger than the sum of its proper divisors (544165984).

725554636 is a wasteful number, since it uses less digits than its factorization.

725554636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181388663 (or 181388661 counting only the distinct ones).

The product of its digits is 756000, while the sum is 43.

The square root of 725554636 is about 26936.1213985978. The cubic root of 725554636 is about 898.5799151990.

The spelling of 725554636 in words is "seven hundred twenty-five million, five hundred fifty-four thousand, six hundred thirty-six".