2565887 has 4 divisors (see below), whose sum is σ = 2569440. Its totient is φ = 2562336.

The previous prime is 2565881. The next prime is 2565907. The reversal of 2565887 is 7885652.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2565887 - 2²⁰ = 1517311 is a prime.

It is a d-powerful number, because it can be written as 2¹⁶ + 5 + 6⁵ + 5⁶ + 8⁶ + 8⁷ + 7⁶ .

It is a Duffinian 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 3 ways as a sum of consecutive naturals, for example, 263 + ... + 2280.

It is an arithmetic number, because the mean of its divisors is an integer number (642360).

2^2565887 is an apocalyptic number.

2565887 is a deficient number, since it is larger than the sum of its proper divisors (3553).

2565887 is a wasteful number, since it uses less digits than its factorization.

2565887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3552.

The product of its digits is 134400, while the sum is 41.

The square root of 2565887 is about 1601.8386310737. The cubic root of 2565887 is about 136.9028561696.

The spelling of 2565887 in words is "two million, five hundred sixty-five thousand, eight hundred eighty-seven".