2565223135 has 16 divisors (see below), whose sum is σ = 3165978816. Its totient is φ = 1993863168.

The previous prime is 2565223127. The next prime is 2565223147. The reversal of 2565223135 is 5313225652.

It is a cyclic number.

It is not a de Polignac number, because 2565223135 - 2³ = 2565223127 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2565223135.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124959 + ... + 144031.

It is an arithmetic number, because the mean of its divisors is an integer number (197873676).

Almost surely, 2^2565223135 is an apocalyptic number.

2565223135 is a deficient number, since it is larger than the sum of its proper divisors (600755681).

2565223135 is a wasteful number, since it uses less digits than its factorization.

2565223135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19842.

The product of its digits is 54000, while the sum is 34.

The square root of 2565223135 is about 50648.0318966098. The cubic root of 2565223135 is about 1368.9104831602.

Adding to 2565223135 its reverse (5313225652), we get a palindrome (7878448787).

The spelling of 2565223135 in words is "two billion, five hundred sixty-five million, two hundred twenty-three thousand, one hundred thirty-five".