256632400241 has 16 divisors (see below), whose sum is σ = 298429747200. Its totient is φ = 216123060048.

The previous prime is 256632400033. The next prime is 256632400259. The reversal of 256632400241 is 142004236652.

It is not a de Polignac number, because 256632400241 - 2¹⁸ = 256632138097 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (256632405241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 582470 + ... + 923328.

It is an arithmetic number, because the mean of its divisors is an integer number (18651859200).

Almost surely, 2^256632400241 is an apocalyptic number.

It is an amenable number.

256632400241 is a deficient number, since it is larger than the sum of its proper divisors (41797346959).

256632400241 is a wasteful number, since it uses less digits than its factorization.

256632400241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342748.

The product of its (nonzero) digits is 69120, while the sum is 35.

Adding to 256632400241 its reverse (142004236652), we get a palindrome (398636636893).

The spelling of 256632400241 in words is "two hundred fifty-six billion, six hundred thirty-two million, four hundred thousand, two hundred forty-one".