2565235265 has 8 divisors (see below), whose sum is σ = 3100752360. Its totient is φ = 2037208192.

The previous prime is 2565235237. The next prime is 2565235273. The reversal of 2565235265 is 5625325652.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1635841 + 2563599424 = 1279^2 + 50632^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2565235265 - 2¹⁴ = 2565218881 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 1871750 + ... + 1873119.

It is an arithmetic number, because the mean of its divisors is an integer number (387594045).

Almost surely, 2^2565235265 is an apocalyptic number.

It is an amenable number.

2565235265 is a deficient number, since it is larger than the sum of its proper divisors (535517095).

2565235265 is a wasteful number, since it uses less digits than its factorization.

2565235265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3745011.

The product of its digits is 540000, while the sum is 41.

The square root of 2565235265 is about 50648.1516444579. The cubic root of 2565235265 is about 1368.9126408488.

The spelling of 2565235265 in words is "two billion, five hundred sixty-five million, two hundred thirty-five thousand, two hundred sixty-five".