2564575 has 18 divisors (see below), whose sum is σ = 3449184. Its totient is φ = 1890720.

The previous prime is 2564567. The next prime is 2564579. The reversal of 2564575 is 5754652.

It is not a de Polignac number, because 2564575 - 2³ = 2564567 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2564575.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2564579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3922 + ... + 4528.

2^2564575 is an apocalyptic number.

2564575 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2564575 is a deficient number, since it is larger than the sum of its proper divisors (884609).

2564575 is a wasteful number, since it uses less digits than its factorization.

2564575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643 (or 625 counting only the distinct ones).

The product of its digits is 42000, while the sum is 34.

The square root of 2564575 is about 1601.4290493181. The cubic root of 2564575 is about 136.8795182790.

The spelling of 2564575 in words is "two million, five hundred sixty-four thousand, five hundred seventy-five".