256630424522205 has 32 divisors (see below), whose sum is σ = 418852584399744. Its totient is φ = 134142330744576.

The previous prime is 256630424522177. The next prime is 256630424522207. The reversal of 256630424522205 is 502225424036652.

It is a happy number.

It is not a de Polignac number, because 256630424522205 - 2⁸ = 256630424521949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256630424522207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 647907742 + ... + 648303711.

It is an arithmetic number, because the mean of its divisors is an integer number (13089143262492).

Almost surely, 2^{256630424522205} is an apocalyptic number.

It is an amenable number.

256630424522205 is a deficient number, since it is larger than the sum of its proper divisors (162222159877539).

256630424522205 is a wasteful number, since it uses less digits than its factorization.

256630424522205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1296211725.

The product of its (nonzero) digits is 6912000, while the sum is 48.

Adding to 256630424522205 its reverse (502225424036652), we get a palindrome (758855848558857).

The spelling of 256630424522205 in words is "two hundred fifty-six trillion, six hundred thirty billion, four hundred twenty-four million, five hundred twenty-two thousand, two hundred five".