2545565 has 16 divisors (see below), whose sum is σ = 3442176. Its totient is φ = 1790400.

The previous prime is 2545561. The next prime is 2545573. The reversal of 2545565 is 5655452.

It is not a de Polignac number, because 2545565 - 2² = 2545561 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2545561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 959 + ... + 2451.

It is an arithmetic number, because the mean of its divisors is an integer number (215136).

2^2545565 is an apocalyptic number.

It is an amenable number.

2545565 is a deficient number, since it is larger than the sum of its proper divisors (896611).

2545565 is a wasteful number, since it uses less digits than its factorization.

2545565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1540.

The product of its digits is 30000, while the sum is 32.

The square root of 2545565 is about 1595.4826855845. The cubic root of 2545565 is about 136.5404711224.

The spelling of 2545565 in words is "two million, five hundred forty-five thousand, five hundred sixty-five".