2565323063 has 4 divisors (see below), whose sum is σ = 2565488520. Its totient is φ = 2565157608.

The previous prime is 2565323051. The next prime is 2565323077. The reversal of 2565323063 is 3603235652.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2565323063 - 2¹² = 2565318967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2565323023) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 56753 + ... + 91386.

It is an arithmetic number, because the mean of its divisors is an integer number (641372130).

Almost surely, 2^2565323063 is an apocalyptic number.

2565323063 is a deficient number, since it is larger than the sum of its proper divisors (165457).

2565323063 is a wasteful number, since it uses less digits than its factorization.

2565323063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165456.

The product of its (nonzero) digits is 97200, while the sum is 35.

The square root of 2565323063 is about 50649.0183814060. The cubic root of 2565323063 is about 1368.9282581845.

The spelling of 2565323063 in words is "two billion, five hundred sixty-five million, three hundred twenty-three thousand, sixty-three".