4256578407 has 8 divisors (see below), whose sum is σ = 5760146176. Its totient is φ = 2795364792.

The previous prime is 4256578387. The next prime is 4256578463. The reversal of 4256578407 is 7048756524.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4256578407 - 2⁶ = 4256578343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4256578477) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10588303 + ... + 10588704.

It is an arithmetic number, because the mean of its divisors is an integer number (720018272).

Almost surely, 2^4256578407 is an apocalyptic number.

4256578407 is a deficient number, since it is larger than the sum of its proper divisors (1503567769).

4256578407 is a wasteful number, since it uses less digits than its factorization.

4256578407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21177077.

The product of its (nonzero) digits is 1881600, while the sum is 48.

The square root of 4256578407 is about 65242.4586216675. The cubic root of 4256578407 is about 1620.6412143117.

The spelling of 4256578407 in words is "four billion, two hundred fifty-six million, five hundred seventy-eight thousand, four hundred seven".