2565313955 has 8 divisors (see below), whose sum is σ = 3080007504. Its totient is φ = 2051164000.

The previous prime is 2565313943. The next prime is 2565313969. The reversal of 2565313955 is 5593135652.

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

It is not a de Polignac number, because 2565313955 - 2¹⁰ = 2565312931 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 125441 + ... + 144450.

It is an arithmetic number, because the mean of its divisors is an integer number (385000938).

Almost surely, 2^2565313955 is an apocalyptic number.

2565313955 is a deficient number, since it is larger than the sum of its proper divisors (514693549).

2565313955 is a wasteful number, since it uses less digits than its factorization.

2565313955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271797.

The product of its digits is 607500, while the sum is 44.

The square root of 2565313955 is about 50648.9284684286. The cubic root of 2565313955 is about 1368.9266380879.

The spelling of 2565313955 in words is "two billion, five hundred sixty-five million, three hundred thirteen thousand, nine hundred fifty-five".