2565765 has 48 divisors (see below), whose sum is σ = 4837248. Its totient is φ = 1254528.

The previous prime is 2565757. The next prime is 2565769. The reversal of 2565765 is 5675652.

It is not a de Polignac number, because 2565765 - 2³ = 2565757 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2565769) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 38262 + ... + 38328.

It is an arithmetic number, because the mean of its divisors is an integer number (100776).

2^2565765 is an apocalyptic number.

It is an amenable number.

2565765 is a deficient number, since it is larger than the sum of its proper divisors (2271483).

2565765 is a wasteful number, since it uses less digits than its factorization.

2565765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138 (or 135 counting only the distinct ones).

The product of its digits is 63000, while the sum is 36.

The square root of 2565765 is about 1601.8005493819. The cubic root of 2565765 is about 136.9006863659.

The spelling of 2565765 in words is "two million, five hundred sixty-five thousand, seven hundred sixty-five".