2565135 has 16 divisors (see below), whose sum is σ = 4560480. Its totient is φ = 1368000.

The previous prime is 2565109. The next prime is 2565139. The reversal of 2565135 is 5315652.

2565135 is a `hidden beast` number, since 2 + 5 + 651 + 3 + 5 = 666.

It is not a de Polignac number, because 2565135 - 2⁵ = 2565103 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 2565099 and 2565108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2565139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9366 + ... + 9635.

It is an arithmetic number, because the mean of its divisors is an integer number (285030).

2^2565135 is an apocalyptic number.

2565135 is a deficient number, since it is larger than the sum of its proper divisors (1995345).

2565135 is a wasteful number, since it uses less digits than its factorization.

2565135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19015 (or 19009 counting only the distinct ones).

The product of its digits is 4500, while the sum is 27.

The square root of 2565135 is about 1601.6038836117. The cubic root of 2565135 is about 136.8894805472.

The spelling of 2565135 in words is "two million, five hundred sixty-five thousand, one hundred thirty-five".