6256555871 has 2 divisors, whose sum is σ = 6256555872. Its totient is φ = 6256555870.

The previous prime is 6256555861. The next prime is 6256555889. The reversal of 6256555871 is 1785556526.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6256555871 - 2¹⁸ = 6256293727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6256555801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3128277935 + 3128277936.

It is an arithmetic number, because the mean of its divisors is an integer number (3128277936).

Almost surely, 2^6256555871 is an apocalyptic number.

6256555871 is a deficient number, since it is larger than the sum of its proper divisors (1).

6256555871 is an equidigital number, since it uses as much as digits as its factorization.

6256555871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2520000, while the sum is 50.

The square root of 6256555871 is about 79098.3936056858. The cubic root of 6256555871 is about 1842.6595785338.

The spelling of 6256555871 in words is "six billion, two hundred fifty-six million, five hundred fifty-five thousand, eight hundred seventy-one".