2565239 has 2 divisors, whose sum is σ = 2565240. Its totient is φ = 2565238.

The previous prime is 2565221. The next prime is 2565257. The reversal of 2565239 is 9325652.

It is a balanced prime because it is at equal distance from previous prime (2565221) and next prime (2565257).

It is a cyclic number.

It is not a de Polignac number, because 2565239 - 2²⁰ = 1516663 is a prime.

It is a super-2 number, since 2×2565239² = 13160902254242, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2565289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1282619 + 1282620.

It is an arithmetic number, because the mean of its divisors is an integer number (1282620).

2^2565239 is an apocalyptic number.

2565239 is a deficient number, since it is larger than the sum of its proper divisors (1).

2565239 is an equidigital number, since it uses as much as digits as its factorization.

2565239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16200, while the sum is 32.

The square root of 2565239 is about 1601.6363507363. The cubic root of 2565239 is about 136.8913305231.

The spelling of 2565239 in words is "two million, five hundred sixty-five thousand, two hundred thirty-nine".