12252312500 has 168 divisors, whose sum is σ = 28297137792. Its totient is φ = 4636800000.

The previous prime is 12252312491. The next prime is 12252312517. The reversal of 12252312500 is 521325221.

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 55 ways as a sum of consecutive naturals, for example, 126312452 + ... + 126312548.

It is an arithmetic number, because the mean of its divisors is an integer number (168435344).

Almost surely, 2^12252312500 is an apocalyptic number.

12252312500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12252312500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14148568896).

12252312500 is an abundant number, since it is smaller than the sum of its proper divisors (16044825292).

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

12252312500 is an frugal number, since it uses more digits than its factorization.

12252312500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221 (or 194 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

Adding to 12252312500 its reverse (521325221), we get a palindrome (12773637721).

The spelling of 12252312500 in words is "twelve billion, two hundred fifty-two million, three hundred twelve thousand, five hundred".