2565156 has 24 divisors (see below), whose sum is σ = 6529824. Its totient is φ = 777280.

The previous prime is 2565151. The next prime is 2565161. The reversal of 2565156 is 6515652.

It is an interprime number because it is at equal distance from previous prime (2565151) and next prime (2565161).

It is not an unprimeable number, because it can be changed into a prime (2565151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9585 + ... + 9848.

It is an arithmetic number, because the mean of its divisors is an integer number (272076).

2^2565156 is an apocalyptic number.

It is an amenable number.

2565156 is an abundant number, since it is smaller than the sum of its proper divisors (3964668).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2565156 is a wasteful number, since it uses less digits than its factorization.

2565156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19451 (or 19449 counting only the distinct ones).

The product of its digits is 9000, while the sum is 30.

The square root of 2565156 is about 1601.6104395264. The cubic root of 2565156 is about 136.8898541040.

The spelling of 2565156 in words is "two million, five hundred sixty-five thousand, one hundred fifty-six".