4256491256 has 16 divisors (see below), whose sum is σ = 7985174400. Its totient is φ = 2127111424.

The previous prime is 4256491247. The next prime is 4256491289. The reversal of 4256491256 is 6521946524.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125720 + ... + 155943.

It is an arithmetic number, because the mean of its divisors is an integer number (499073400).

Almost surely, 2^4256491256 is an apocalyptic number.

It is an amenable number.

4256491256 is a deficient number, since it is larger than the sum of its proper divisors (3728683144).

4256491256 is a wasteful number, since it uses less digits than its factorization.

4256491256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283558 (or 283554 counting only the distinct ones).

The product of its digits is 518400, while the sum is 44.

The square root of 4256491256 is about 65241.7907173002. The cubic root of 4256491256 is about 1620.6301536700.

The spelling of 4256491256 in words is "four billion, two hundred fifty-six million, four hundred ninety-one thousand, two hundred fifty-six".