2565140 has 12 divisors (see below), whose sum is σ = 5386836. Its totient is φ = 1026048.

The previous prime is 2565139. The next prime is 2565149. The reversal of 2565140 is 415652.

It can be written as a sum of positive squares in 2 ways, for example, as 1811716 + 753424 = 1346^2 + 868^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2565149) 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, 64109 + ... + 64148.

It is an arithmetic number, because the mean of its divisors is an integer number (448903).

2^2565140 is an apocalyptic number.

2565140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2565140 is an abundant number, since it is smaller than the sum of its proper divisors (2821696).

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

2565140 is a wasteful number, since it uses less digits than its factorization.

2565140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128266 (or 128264 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 2565140 is about 1601.6054445462. The cubic root of 2565140 is about 136.8895694895.

The spelling of 2565140 in words is "two million, five hundred sixty-five thousand, one hundred forty".