12558552552 has 256 divisors, whose sum is σ = 44803584000. Its totient is φ = 3168025344.

The previous prime is 12558552521. The next prime is 12558552581. The reversal of 12558552552 is 25525585521.

12558552552 is a `hidden beast` number, since 1 + 25 + 58 + 5 + 525 + 52 = 666.

12558552552 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 12558552498 and 12558552507.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 438199 + ... + 465977.

It is an arithmetic number, because the mean of its divisors is an integer number (175014000).

Almost surely, 2^12558552552 is an apocalyptic number.

12558552552 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 12558552552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22401792000).

12558552552 is an abundant number, since it is smaller than the sum of its proper divisors (32245031448).

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

12558552552 is a wasteful number, since it uses less digits than its factorization.

12558552552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27837 (or 27827 counting only the distinct ones).

The product of its digits is 1000000, while the sum is 45.

The spelling of 12558552552 in words is "twelve billion, five hundred fifty-eight million, five hundred fifty-two thousand, five hundred fifty-two".