1256425841874 has 32 divisors (see below), whose sum is σ = 2898177575040. Its totient is φ = 355685427072.

The previous prime is 1256425841863. The next prime is 1256425841903. The reversal of 1256425841874 is 4781485246521.

It is a super-2 number, since 2×1256425841874² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 137219739 + ... + 137228894.

It is an arithmetic number, because the mean of its divisors is an integer number (90568049220).

Almost surely, 2^{1256425841874} is an apocalyptic number.

1256425841874 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1256425841874 is an abundant number, since it is smaller than the sum of its proper divisors (1641751733166).

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

1256425841874 is a wasteful number, since it uses less digits than its factorization.

1256425841874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274448754.

The product of its digits is 17203200, while the sum is 57.

The spelling of 1256425841874 in words is "one trillion, two hundred fifty-six billion, four hundred twenty-five million, eight hundred forty-one thousand, eight hundred seventy-four".