4256440615 has 24 divisors (see below), whose sum is σ = 6039068832. Its totient is φ = 2870844480.

The previous prime is 4256440609. The next prime is 4256440631. The reversal of 4256440615 is 5160446524.

It is not a de Polignac number, because 4256440615 - 2⁵ = 4256440583 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 (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 127459 + ... + 157348.

It is an arithmetic number, because the mean of its divisors is an integer number (251627868).

Almost surely, 2^4256440615 is an apocalyptic number.

4256440615 is a deficient number, since it is larger than the sum of its proper divisors (1782628217).

4256440615 is a wasteful number, since it uses less digits than its factorization.

4256440615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284887 (or 284880 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 37.

The square root of 4256440615 is about 65241.4026136778. The cubic root of 4256440615 is about 1620.6237265722.

The spelling of 4256440615 in words is "four billion, two hundred fifty-six million, four hundred forty thousand, six hundred fifteen".