2565438 has 16 divisors (see below), whose sum is σ = 5218560. Its totient is φ = 840536.

The previous prime is 2565403. The next prime is 2565449. The reversal of 2565438 is 8345652.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 2565399 and 2565408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3270 + ... + 3977.

It is an arithmetic number, because the mean of its divisors is an integer number (326160).

2^2565438 is an apocalyptic number.

2565438 is an abundant number, since it is smaller than the sum of its proper divisors (2653122).

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

2565438 is a wasteful number, since it uses less digits than its factorization.

2565438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7311.

The product of its digits is 28800, while the sum is 33.

The square root of 2565438 is about 1601.6984734962. The cubic root of 2565438 is about 136.8948702414.

It can be divided in two parts, 2565 and 438, that added together give a palindrome (3003).

The spelling of 2565438 in words is "two million, five hundred sixty-five thousand, four hundred thirty-eight".