256374551527 has 2 divisors, whose sum is σ = 256374551528. Its totient is φ = 256374551526.

The previous prime is 256374551509. The next prime is 256374551551. The reversal of 256374551527 is 725155473652.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-256374551527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256374555527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128187275763 + 128187275764.

It is an arithmetic number, because the mean of its divisors is an integer number (128187275764).

Almost surely, 2^256374551527 is an apocalyptic number.

256374551527 is a deficient number, since it is larger than the sum of its proper divisors (1).

256374551527 is an equidigital number, since it uses as much as digits as its factorization.

256374551527 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8820000, while the sum is 52.

The spelling of 256374551527 in words is "two hundred fifty-six billion, three hundred seventy-four million, five hundred fifty-one thousand, five hundred twenty-seven".