2565135833 has 16 divisors (see below), whose sum is σ = 2799679680. Its totient is φ = 2335992384.

The previous prime is 2565135809. The next prime is 2565135841. The reversal of 2565135833 is 3385315652.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2565135833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2565135883) 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, 1098335 + ... + 1100667.

It is an arithmetic number, because the mean of its divisors is an integer number (174979980).

Almost surely, 2^2565135833 is an apocalyptic number.

It is an amenable number.

2565135833 is a deficient number, since it is larger than the sum of its proper divisors (234543847).

2565135833 is a wasteful number, since it uses less digits than its factorization.

2565135833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3448.

The product of its digits is 324000, while the sum is 41.

The square root of 2565135833 is about 50647.1700394010. The cubic root of 2565135833 is about 1368.8949536497.

The spelling of 2565135833 in words is "two billion, five hundred sixty-five million, one hundred thirty-five thousand, eight hundred thirty-three".