2564526263 has 4 divisors (see below), whose sum is σ = 2761797528. Its totient is φ = 2367255000.

The previous prime is 2564526233. The next prime is 2564526329. The reversal of 2564526263 is 3626254652.

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 2564526263 - 2¹⁸ = 2564264119 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2564526263.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2564526233) 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 3 ways as a sum of consecutive naturals, for example, 98635613 + ... + 98635638.

It is an arithmetic number, because the mean of its divisors is an integer number (690449382).

Almost surely, 2^2564526263 is an apocalyptic number.

2564526263 is a deficient number, since it is larger than the sum of its proper divisors (197271265).

2564526263 is a wasteful number, since it uses less digits than its factorization.

2564526263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197271264.

The product of its digits is 518400, while the sum is 41.

The square root of 2564526263 is about 50641.1518727606. The cubic root of 2564526263 is about 1368.7865119066.

The spelling of 2564526263 in words is "two billion, five hundred sixty-four million, five hundred twenty-six thousand, two hundred sixty-three".