2556385859 has 2 divisors, whose sum is σ = 2556385860. Its totient is φ = 2556385858.

The previous prime is 2556385841. The next prime is 2556385877. The reversal of 2556385859 is 9585836552.

2556385859 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (2556385841) and next prime (2556385877).

It is a cyclic number.

It is not a de Polignac number, because 2556385859 - 2¹⁶ = 2556320323 is a prime.

It is not a weakly prime, because it can be changed into another prime (2556385879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1278192929 + 1278192930.

It is an arithmetic number, because the mean of its divisors is an integer number (1278192930).

Almost surely, 2^2556385859 is an apocalyptic number.

2556385859 is a deficient number, since it is larger than the sum of its proper divisors (1).

2556385859 is an equidigital number, since it uses as much as digits as its factorization.

2556385859 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960000, while the sum is 56.

The square root of 2556385859 is about 50560.7145815800. The cubic root of 2556385859 is about 1367.3366943456.

The spelling of 2556385859 in words is "two billion, five hundred fifty-six million, three hundred eighty-five thousand, eight hundred fifty-nine".