1256474296055 has 32 divisors (see below), whose sum is σ = 1698568316928. Its totient is φ = 883973174400.

The previous prime is 1256474296039. The next prime is 1256474296139. The reversal of 1256474296055 is 5506924746521.

It is not a de Polignac number, because 1256474296055 - 2⁴ = 1256474296039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 31 ways as a sum of consecutive naturals, for example, 4215584 + ... + 4503786.

It is an arithmetic number, because the mean of its divisors is an integer number (53080259904).

Almost surely, 2^{1256474296055} is an apocalyptic number.

1256474296055 is a deficient number, since it is larger than the sum of its proper divisors (442094020873).

1256474296055 is a wasteful number, since it uses less digits than its factorization.

1256474296055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290807.

The product of its (nonzero) digits is 18144000, while the sum is 56.

The spelling of 1256474296055 in words is "one trillion, two hundred fifty-six billion, four hundred seventy-four million, two hundred ninety-six thousand, fifty-five".