2565885 has 24 divisors (see below), whose sum is σ = 4777056. Its totient is φ = 1172640.

The previous prime is 2565881. The next prime is 2565907. The reversal of 2565885 is 5885652.

It is not a de Polignac number, because 2565885 - 2² = 2565881 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2565881) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1011 + ... + 2480.

It is an arithmetic number, because the mean of its divisors is an integer number (199044).

2^2565885 is an apocalyptic number.

It is an amenable number.

2565885 is a deficient number, since it is larger than the sum of its proper divisors (2211171).

2565885 is a wasteful number, since it uses less digits than its factorization.

2565885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3513 (or 3506 counting only the distinct ones).

The product of its digits is 96000, while the sum is 39.

The square root of 2565885 is about 1601.8380067909. The cubic root of 2565885 is about 136.9028205996.

The spelling of 2565885 in words is "two million, five hundred sixty-five thousand, eight hundred eighty-five".