2565297942 has 16 divisors (see below), whose sum is σ = 5131123200. Its totient is φ = 855011432.

The previous prime is 2565297877. The next prime is 2565297961. The reversal of 2565297942 is 2497925652.

It is a congruent 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, 72559 + ... + 101957.

It is an arithmetic number, because the mean of its divisors is an integer number (320695200).

Almost surely, 2^2565297942 is an apocalyptic number.

2565297942 is an abundant number, since it is smaller than the sum of its proper divisors (2565825258).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2565297942 is a wasteful number, since it uses less digits than its factorization.

2565297942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43947.

The product of its digits is 2721600, while the sum is 51.

The square root of 2565297942 is about 50648.7703898130. The cubic root of 2565297942 is about 1368.9237897468.

The spelling of 2565297942 in words is "two billion, five hundred sixty-five million, two hundred ninety-seven thousand, nine hundred forty-two".