2564458775 has 12 divisors (see below), whose sum is σ = 3257489424. Its totient is φ = 2001528000.

The previous prime is 2564458739. The next prime is 2564458837. The reversal of 2564458775 is 5778544652.

It is not a de Polignac number, because 2564458775 - 2⁶ = 2564458711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1249931 + ... + 1251980.

It is an arithmetic number, because the mean of its divisors is an integer number (271457452).

Almost surely, 2^2564458775 is an apocalyptic number.

2564458775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2564458775 is a deficient number, since it is larger than the sum of its proper divisors (693030649).

2564458775 is a wasteful number, since it uses less digits than its factorization.

2564458775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2501962 (or 2501957 counting only the distinct ones).

The product of its digits is 9408000, while the sum is 53.

The square root of 2564458775 is about 50640.4855328225. The cubic root of 2564458775 is about 1368.7745048190.

The spelling of 2564458775 in words is "two billion, five hundred sixty-four million, four hundred fifty-eight thousand, seven hundred seventy-five".