12525212500000 has 108 divisors (see below), whose sum is σ = 30823780116654. Its totient is φ = 5010080000000.

The previous prime is 12525212499967. The next prime is 12525212500007. The reversal of 12525212500000 is 521252521.

It can be written as a sum of positive squares in 9 ways, for example, as 11961277586064 + 563934913936 = 3458508^2 + 750956^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (12525212500007) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 11998992 + ... + 13001008.

Almost surely, 2^{12525212500000} is an apocalyptic number.

12525212500000 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 12525212500000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15411890058327).

12525212500000 is an abundant number, since it is smaller than the sum of its proper divisors (18298567616654).

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

12525212500000 is an frugal number, since it uses more digits than its factorization.

12525212500000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1002067 (or 1002024 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 25.

Adding to 12525212500000 its reverse (521252521), we get a palindrome (12525733752521).

The spelling of 12525212500000 in words is "twelve trillion, five hundred twenty-five billion, two hundred twelve million, five hundred thousand".