12125561552 has 20 divisors (see below), whose sum is σ = 25300450980. Its totient is φ = 5596412928.

The previous prime is 12125561527. The next prime is 12125561561. The reversal of 12125561552 is 25516552121.

12125561552 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 3789141136 + 8336420416 = 61556^2 + 91304^2 .

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 29147777 + ... + 29148192.

It is an arithmetic number, because the mean of its divisors is an integer number (1265022549).

Almost surely, 2^12125561552 is an apocalyptic number.

It is an amenable number.

12125561552 is an abundant number, since it is smaller than the sum of its proper divisors (13174889428).

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

12125561552 is a wasteful number, since it uses less digits than its factorization.

12125561552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58295990 (or 58295984 counting only the distinct ones).

The product of its digits is 30000, while the sum is 35.

The spelling of 12125561552 in words is "twelve billion, one hundred twenty-five million, five hundred sixty-one thousand, five hundred fifty-two".