256255802057 has 2 divisors, whose sum is σ = 256255802058. Its totient is φ = 256255802056.

The previous prime is 256255802041. The next prime is 256255802083. The reversal of 256255802057 is 750208552652.

256255802057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 230703459856 + 25552342201 = 480316^2 + 159851^2 .

It is a cyclic number.

It is not a de Polignac number, because 256255802057 - 2⁴ = 256255802041 is a prime.

It is not a weakly prime, because it can be changed into another prime (256255802017) 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 as a sum of consecutive naturals, namely, 128127901028 + 128127901029.

It is an arithmetic number, because the mean of its divisors is an integer number (128127901029).

Almost surely, 2^256255802057 is an apocalyptic number.

It is an amenable number.

256255802057 is a deficient number, since it is larger than the sum of its proper divisors (1).

256255802057 is an equidigital number, since it uses as much as digits as its factorization.

256255802057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680000, while the sum is 47.

The spelling of 256255802057 in words is "two hundred fifty-six billion, two hundred fifty-five million, eight hundred two thousand, fifty-seven".