2565321342 has 16 divisors (see below), whose sum is σ = 5133497472. Its totient is φ = 854631320.

The previous prime is 2565321337. The next prime is 2565321371. The reversal of 2565321342 is 2431235652.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107178 + ... + 128909.

It is an arithmetic number, because the mean of its divisors is an integer number (320843592).

Almost surely, 2^2565321342 is an apocalyptic number.

2565321342 is an abundant number, since it is smaller than the sum of its proper divisors (2568176130).

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

2565321342 is a wasteful number, since it uses less digits than its factorization.

2565321342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237903.

The product of its digits is 43200, while the sum is 33.

The square root of 2565321342 is about 50649.0013919327. The cubic root of 2565321342 is about 1368.9279520599.

Adding to 2565321342 its reverse (2431235652), we get a palindrome (4996556994).

The spelling of 2565321342 in words is "two billion, five hundred sixty-five million, three hundred twenty-one thousand, three hundred forty-two".