725949663 has 16 divisors (see below), whose sum is σ = 1054012800. Its totient is φ = 442683360.

The previous prime is 725949659. The next prime is 725949671. The reversal of 725949663 is 366949527.

It is not a de Polignac number, because 725949663 - 2² = 725949659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725949613) 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 in 15 ways as a sum of consecutive naturals, for example, 217933 + ... + 221238.

It is an arithmetic number, because the mean of its divisors is an integer number (65875800).

Almost surely, 2^725949663 is an apocalyptic number.

725949663 is a deficient number, since it is larger than the sum of its proper divisors (328063137).

725949663 is a wasteful number, since it uses less digits than its factorization.

725949663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439222.

The product of its digits is 2449440, while the sum is 51.

The square root of 725949663 is about 26943.4530637778. The cubic root of 725949663 is about 898.7429623863.

The spelling of 725949663 in words is "seven hundred twenty-five million, nine hundred forty-nine thousand, six hundred sixty-three".