725656626 has 24 divisors (see below), whose sum is σ = 1655007120. Its totient is φ = 229154616.

The previous prime is 725656621. The next prime is 725656627. The reversal of 725656626 is 626656527.

725656626 is a `hidden beast` number, since 7 + 2 + 565 + 66 + 26 = 666.

It is not an unprimeable number, because it can be changed into a prime (725656621) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 1060560 + ... + 1061243.

It is an arithmetic number, because the mean of its divisors is an integer number (68958630).

Almost surely, 2^725656626 is an apocalyptic number.

725656626 is an abundant number, since it is smaller than the sum of its proper divisors (929350494).

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

725656626 is a wasteful number, since it uses less digits than its factorization.

725656626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2121830 (or 2121827 counting only the distinct ones).

The product of its digits is 907200, while the sum is 45.

The square root of 725656626 is about 26938.0145148079. The cubic root of 725656626 is about 898.6220171842.

Subtracting from 725656626 its reverse (626656527), we obtain a palindrome (99000099).

The spelling of 725656626 in words is "seven hundred twenty-five million, six hundred fifty-six thousand, six hundred twenty-six".