1256882531 has 2 divisors, whose sum is σ = 1256882532. Its totient is φ = 1256882530.

The previous prime is 1256882527. The next prime is 1256882603. The reversal of 1256882531 is 1352886521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1256882531 - 2² = 1256882527 is a prime.

It is a super-2 number, since 2×1256882531² = 3159507393465931922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1256882521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 628441265 + 628441266.

It is an arithmetic number, because the mean of its divisors is an integer number (628441266).

Almost surely, 2^1256882531 is an apocalyptic number.

1256882531 is a deficient number, since it is larger than the sum of its proper divisors (1).

1256882531 is an equidigital number, since it uses as much as digits as its factorization.

1256882531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 115200, while the sum is 41.

The square root of 1256882531 is about 35452.5391333258. The cubic root of 1256882531 is about 1079.1907892966.

The spelling of 1256882531 in words is "one billion, two hundred fifty-six million, eight hundred eighty-two thousand, five hundred thirty-one".