2565231 has 8 divisors (see below), whose sum is σ = 3429504. Its totient is φ = 1705560.

The previous prime is 2565221. The next prime is 2565239. The reversal of 2565231 is 1325652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2565231 - 2⁷ = 2565103 is a prime.

It is a super-2 number, since 2×2565231² = 13160820166722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2565239) 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, 486 + ... + 2316.

It is an arithmetic number, because the mean of its divisors is an integer number (428688).

2^2565231 is an apocalyptic number.

2565231 is a deficient number, since it is larger than the sum of its proper divisors (864273).

2565231 is a wasteful number, since it uses less digits than its factorization.

2565231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2301.

The product of its digits is 1800, while the sum is 24.

The square root of 2565231 is about 1601.6338532886. The cubic root of 2565231 is about 136.8911882190.

It can be divided in two parts, 25 and 65231, that added together give a palindrome (65256).

The spelling of 2565231 in words is "two million, five hundred sixty-five thousand, two hundred thirty-one".