2565287267 has 16 divisors (see below), whose sum is σ = 2837892672. Its totient is φ = 2306472960.

The previous prime is 2565287251. The next prime is 2565287269. The reversal of 2565287267 is 7627825652.

It is not a de Polignac number, because 2565287267 - 2⁴ = 2565287251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2565287269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 339167 + ... + 346647.

It is an arithmetic number, because the mean of its divisors is an integer number (177368292).

Almost surely, 2^2565287267 is an apocalyptic number.

2565287267 is a deficient number, since it is larger than the sum of its proper divisors (272605405).

2565287267 is a wasteful number, since it uses less digits than its factorization.

2565287267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8398.

The product of its digits is 2822400, while the sum is 50.

The square root of 2565287267 is about 50648.6650070858. The cubic root of 2565287267 is about 1368.9218909054.

The spelling of 2565287267 in words is "two billion, five hundred sixty-five million, two hundred eighty-seven thousand, two hundred sixty-seven".