2564485277 has 2 divisors, whose sum is σ = 2564485278. Its totient is φ = 2564485276.

The previous prime is 2564485247. The next prime is 2564485291. The reversal of 2564485277 is 7725844652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2412184996 + 152300281 = 49114^2 + 12341^2 .

It is a cyclic number.

It is not a de Polignac number, because 2564485277 - 2³⁰ = 1490743453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2564485247) by changing a digit.

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 as a sum of consecutive naturals, namely, 1282242638 + 1282242639.

It is an arithmetic number, because the mean of its divisors is an integer number (1282242639).

Almost surely, 2^2564485277 is an apocalyptic number.

It is an amenable number.

2564485277 is a deficient number, since it is larger than the sum of its proper divisors (1).

2564485277 is an equidigital number, since it uses as much as digits as its factorization.

2564485277 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3763200, while the sum is 50.

The square root of 2564485277 is about 50640.7472002537. The cubic root of 2564485277 is about 1368.7792199318.

The spelling of 2564485277 in words is "two billion, five hundred sixty-four million, four hundred eighty-five thousand, two hundred seventy-seven".