12251313563 has 4 divisors (see below), whose sum is σ = 12896119560. Its totient is φ = 11606507568.

The previous prime is 12251313541. The next prime is 12251313587. The reversal of 12251313563 is 36531315221.

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 12251313563 - 2⁸ = 12251313307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12251313593) 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, 322402970 + ... + 322403007.

It is an arithmetic number, because the mean of its divisors is an integer number (3224029890).

Almost surely, 2^12251313563 is an apocalyptic number.

12251313563 is a deficient number, since it is larger than the sum of its proper divisors (644805997).

12251313563 is an equidigital number, since it uses as much as digits as its factorization.

12251313563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644805996.

The product of its digits is 16200, while the sum is 32.

Adding to 12251313563 its reverse (36531315221), we get a palindrome (48782628784).

The spelling of 12251313563 in words is "twelve billion, two hundred fifty-one million, three hundred thirteen thousand, five hundred sixty-three".