5256806385 has 16 divisors (see below), whose sum is σ = 8905648896. Its totient is φ = 2638710528.

The previous prime is 5256806371. The next prime is 5256806441. The reversal of 5256806385 is 5836086525.

It is not a de Polignac number, because 5256806385 - 2⁵ = 5256806353 is a prime.

It is a Curzon number.

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, 10307209 + ... + 10307718.

It is an arithmetic number, because the mean of its divisors is an integer number (556603056).

Almost surely, 2^5256806385 is an apocalyptic number.

It is an amenable number.

5256806385 is a deficient number, since it is larger than the sum of its proper divisors (3648842511).

5256806385 is a wasteful number, since it uses less digits than its factorization.

5256806385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20614952.

The product of its (nonzero) digits is 1728000, while the sum is 48.

The square root of 5256806385 is about 72503.8370363941. The cubic root of 5256806385 is about 1738.7640830345.

The spelling of 5256806385 in words is "five billion, two hundred fifty-six million, eight hundred six thousand, three hundred eighty-five".