1270581256 has 32 divisors (see below), whose sum is σ = 2725309440. Its totient is φ = 544007808.

The previous prime is 1270581229. The next prime is 1270581269. The reversal of 1270581256 is 6521850721.

It is a super-2 number, since 2×1270581256² = 3228753456197075072, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50436 + ... + 71308.

It is an arithmetic number, because the mean of its divisors is an integer number (85165920).

Almost surely, 2^1270581256 is an apocalyptic number.

It is an amenable number.

1270581256 is an abundant number, since it is smaller than the sum of its proper divisors (1454728184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1270581256 is a wasteful number, since it uses less digits than its factorization.

1270581256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21973 (or 21969 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 37.

The square root of 1270581256 is about 35645.2136478378. The cubic root of 1270581256 is about 1083.0973204418.

It can be divided in two parts, 12705 and 81256, that added together give a triangular number (93961 = T₄₃₃).

The spelling of 1270581256 in words is "one billion, two hundred seventy million, five hundred eighty-one thousand, two hundred fifty-six".