12325216512 has 216 divisors, whose sum is σ = 39829187776. Its totient is φ = 3313926144.

The previous prime is 12325216489. The next prime is 12325216513. The reversal of 12325216512 is 21561252321.

It is a super-2 number, since 2×12325216512² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12325216512.

It is not an unprimeable number, because it can be changed into a prime (12325216513) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1549698 + ... + 1557630.

Almost surely, 2^12325216512 is an apocalyptic number.

12325216512 is a gapful number since it is divisible by the number (12) 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 12325216512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19914593888).

12325216512 is an abundant number, since it is smaller than the sum of its proper divisors (27503971264).

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

12325216512 is an equidigital number, since it uses as much as digits as its factorization.

12325216512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7993 (or 7962 counting only the distinct ones).

The product of its digits is 7200, while the sum is 30.

Adding to 12325216512 its reverse (21561252321), we get a palindrome (33886468833).

The spelling of 12325216512 in words is "twelve billion, three hundred twenty-five million, two hundred sixteen thousand, five hundred twelve".