12523252220 has 24 divisors (see below), whose sum is σ = 26631729600. Its totient is φ = 4945891392.

The previous prime is 12523252213. The next prime is 12523252223. The reversal of 12523252220 is 2225232521.

It is a self number, because there is not a number n which added to its sum of digits gives 12523252220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12523252223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3961475 + ... + 3964634.

It is an arithmetic number, because the mean of its divisors is an integer number (1109655400).

Almost surely, 2^12523252220 is an apocalyptic number.

12523252220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12523252220 is an abundant number, since it is smaller than the sum of its proper divisors (14108477380).

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

12523252220 is a wasteful number, since it uses less digits than its factorization.

12523252220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7926197 (or 7926195 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

Adding to 12523252220 its reverse (2225232521), we get a palindrome (14748484741).

The spelling of 12523252220 in words is "twelve billion, five hundred twenty-three million, two hundred fifty-two thousand, two hundred twenty".