2565769 has 2 divisors, whose sum is σ = 2565770. Its totient is φ = 2565768.

The previous prime is 2565757. The next prime is 2565791. The reversal of 2565769 is 9675652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1638400 + 927369 = 1280^2 + 963^2 .

It is a cyclic number.

It is not a de Polignac number, because 2565769 - 2⁹ = 2565257 is a prime.

It is a super-2 number, since 2×2565769² = 13166341122722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2565709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1282884 + 1282885.

It is an arithmetic number, because the mean of its divisors is an integer number (1282885).

2^2565769 is an apocalyptic number.

It is an amenable number.

2565769 is a deficient number, since it is larger than the sum of its proper divisors (1).

2565769 is an equidigital number, since it uses as much as digits as its factorization.

2565769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 113400, while the sum is 40.

The square root of 2565769 is about 1601.8017979763. The cubic root of 2565769 is about 136.9007575081.

The spelling of 2565769 in words is "two million, five hundred sixty-five thousand, seven hundred sixty-nine".