2563223651 has 4 divisors (see below), whose sum is σ = 2595669600. Its totient is φ = 2530777704.

The previous prime is 2563223639. The next prime is 2563223653. The reversal of 2563223651 is 1563223652.

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 2563223651 - 2⁶ = 2563223587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2563223653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16222856 + ... + 16223013.

It is an arithmetic number, because the mean of its divisors is an integer number (648917400).

Almost surely, 2^2563223651 is an apocalyptic number.

2563223651 is a deficient number, since it is larger than the sum of its proper divisors (32445949).

2563223651 is an equidigital number, since it uses as much as digits as its factorization.

2563223651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32445948.

The product of its digits is 64800, while the sum is 35.

The square root of 2563223651 is about 50628.2890388368. The cubic root of 2563223651 is about 1368.5547212469.

Subtracting from 2563223651 its reverse (1563223652), we obtain a palindrome (999999999).

The spelling of 2563223651 in words is "two billion, five hundred sixty-three million, two hundred twenty-three thousand, six hundred fifty-one".