2565535 has 16 divisors (see below), whose sum is σ = 3672576. Its totient is φ = 1682208.

The previous prime is 2565463. The next prime is 2565559. The reversal of 2565535 is 5355652.

It is a cyclic number.

It is not a de Polignac number, because 2565535 - 2⁹ = 2565023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2565497 and 2565506.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 789 + ... + 2398.

It is an arithmetic number, because the mean of its divisors is an integer number (229536).

2^2565535 is an apocalyptic number.

2565535 is a deficient number, since it is larger than the sum of its proper divisors (1107041).

2565535 is a wasteful number, since it uses less digits than its factorization.

2565535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3222.

The product of its digits is 22500, while the sum is 31.

The square root of 2565535 is about 1601.7287535660. The cubic root of 2565535 is about 136.8965955653.

The spelling of 2565535 in words is "two million, five hundred sixty-five thousand, five hundred thirty-five".