725637566 has 8 divisors (see below), whose sum is σ = 1089784584. Its totient is φ = 362376040.

The previous prime is 725637551. The next prime is 725637581. The reversal of 725637566 is 665736527.

725637566 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (725637551) and next prime (725637581).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 725637566.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219320 + ... + 222603.

It is an arithmetic number, because the mean of its divisors is an integer number (136223073).

Almost surely, 2^725637566 is an apocalyptic number.

725637566 is a deficient number, since it is larger than the sum of its proper divisors (364147018).

725637566 is a wasteful number, since it uses less digits than its factorization.

725637566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442746.

The product of its digits is 1587600, while the sum is 47.

The square root of 725637566 is about 26937.6607373395. The cubic root of 725637566 is about 898.6141494200.

The spelling of 725637566 in words is "seven hundred twenty-five million, six hundred thirty-seven thousand, five hundred sixty-six".