2565469 has 4 divisors (see below), whose sum is σ = 2634844. Its totient is φ = 2496096.

The previous prime is 2565463. The next prime is 2565559. The reversal of 2565469 is 9645652.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1863225 + 702244 = 1365^2 + 838^2 .

It is a cyclic number.

It is not a de Polignac number, because 2565469 - 2³ = 2565461 is a prime.

It is a super-2 number, since 2×2565469² = 13163262379922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 69337 = 2565469 / (2 + 5 + 6 + 5 + 4 + 6 + 9).

2565469 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2565461) 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, 34632 + ... + 34705.

It is an arithmetic number, because the mean of its divisors is an integer number (658711).

2^2565469 is an apocalyptic number.

It is an amenable number.

2565469 is a deficient number, since it is larger than the sum of its proper divisors (69375).

2565469 is an equidigital number, since it uses as much as digits as its factorization.

2565469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69374.

The product of its digits is 64800, while the sum is 37.

The square root of 2565469 is about 1601.7081506941. The cubic root of 2565469 is about 136.8954216383.

The spelling of 2565469 in words is "two million, five hundred sixty-five thousand, four hundred sixty-nine".