656625055 has 8 divisors (see below), whose sum is σ = 793965744. Its totient is φ = 521289600.

The previous prime is 656625049. The next prime is 656625059. The reversal of 656625055 is 550526656.

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

It is not a de Polignac number, because 656625055 - 2¹⁷ = 656493983 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 656624999 and 656625017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656625059) 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 7 ways as a sum of consecutive naturals, for example, 500586 + ... + 501895.

It is an arithmetic number, because the mean of its divisors is an integer number (99245718).

Almost surely, 2^656625055 is an apocalyptic number.

656625055 is a deficient number, since it is larger than the sum of its proper divisors (137340689).

656625055 is a wasteful number, since it uses less digits than its factorization.

656625055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1002617.

The product of its (nonzero) digits is 270000, while the sum is 40.

The square root of 656625055 is about 25624.6961933210. The cubic root of 656625055 is about 869.1721790491.

The spelling of 656625055 in words is "six hundred fifty-six million, six hundred twenty-five thousand, fifty-five".