656025552225 has 96 divisors (see below), whose sum is σ = 1235129280000. Its totient is φ = 341182886400.

The previous prime is 656025552163. The next prime is 656025552229. The reversal of 656025552225 is 522255520656.

656025552225 is a `hidden beast` number, since 6 + 56 + 0 + 2 + 55 + 522 + 25 = 666.

It is not a de Polignac number, because 656025552225 - 2¹⁶ = 656025486689 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (656025552229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 76074264 + ... + 76082886.

It is an arithmetic number, because the mean of its divisors is an integer number (12865930000).

Almost surely, 2^656025552225 is an apocalyptic number.

It is an amenable number.

656025552225 is a deficient number, since it is larger than the sum of its proper divisors (579103727775).

656025552225 is a wasteful number, since it uses less digits than its factorization.

656025552225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11432 (or 11421 counting only the distinct ones).

The product of its (nonzero) digits is 1800000, while the sum is 45.

The spelling of 656025552225 in words is "six hundred fifty-six billion, twenty-five million, five hundred fifty-two thousand, two hundred twenty-five".