2556256231 has 2 divisors, whose sum is σ = 2556256232. Its totient is φ = 2556256230.

The previous prime is 2556256223. The next prime is 2556256237. The reversal of 2556256231 is 1326526552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2556256231 - 2³ = 2556256223 is a prime.

It is a super-2 number, since 2×2556256231² = 13068891837052650722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2556256237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1278128115 + 1278128116.

It is an arithmetic number, because the mean of its divisors is an integer number (1278128116).

Almost surely, 2^2556256231 is an apocalyptic number.

2556256231 is a deficient number, since it is larger than the sum of its proper divisors (1).

2556256231 is an equidigital number, since it uses as much as digits as its factorization.

2556256231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108000, while the sum is 37.

The square root of 2556256231 is about 50559.4326609783. The cubic root of 2556256231 is about 1367.3135825350.

The spelling of 2556256231 in words is "two billion, five hundred fifty-six million, two hundred fifty-six thousand, two hundred thirty-one".