12520419252 has 144 divisors (see below), whose sum is σ = 33331435200. Its totient is φ = 3627148800.

The previous prime is 12520419251. The next prime is 12520419259. The reversal of 12520419252 is 25291402521.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12520419251) 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 47 ways as a sum of consecutive naturals, for example, 11289274 + ... + 11290382.

It is an arithmetic number, because the mean of its divisors is an integer number (231468300).

Almost surely, 2^12520419252 is an apocalyptic number.

12520419252 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 12520419252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16665717600).

12520419252 is an abundant number, since it is smaller than the sum of its proper divisors (20811015948).

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

12520419252 is a wasteful number, since it uses less digits than its factorization.

12520419252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1278 (or 1245 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 33.

The spelling of 12520419252 in words is "twelve billion, five hundred twenty million, four hundred nineteen thousand, two hundred fifty-two".