256052260507 has 2 divisors, whose sum is σ = 256052260508. Its totient is φ = 256052260506.

The previous prime is 256052260483. The next prime is 256052260553. The reversal of 256052260507 is 705062250652.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-256052260507 is a prime.

It is a super-2 number, since 2×256052260507² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 256052260507.

It is not a weakly prime, because it can be changed into another prime (256052266507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128026130253 + 128026130254.

It is an arithmetic number, because the mean of its divisors is an integer number (128026130254).

Almost surely, 2^256052260507 is an apocalyptic number.

256052260507 is a deficient number, since it is larger than the sum of its proper divisors (1).

256052260507 is an equidigital number, since it uses as much as digits as its factorization.

256052260507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 252000, while the sum is 40.

The spelling of 256052260507 in words is "two hundred fifty-six billion, fifty-two million, two hundred sixty thousand, five hundred seven".