12126185825 has 48 divisors (see below), whose sum is σ = 16446614016. Its totient is φ = 8815564800.

The previous prime is 12126185801. The next prime is 12126185843. The reversal of 12126185825 is 52858162121.

12126185825 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12126185825 - 2¹⁰ = 12126184801 is a prime.

It is a Duffinian number.

It is a Curzon 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 47 ways as a sum of consecutive naturals, for example, 6650864 + ... + 6652686.

It is an arithmetic number, because the mean of its divisors is an integer number (342637792).

Almost surely, 2^12126185825 is an apocalyptic number.

It is an amenable number.

12126185825 is a deficient number, since it is larger than the sum of its proper divisors (4320428191).

12126185825 is a wasteful number, since it uses less digits than its factorization.

12126185825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2154 (or 2149 counting only the distinct ones).

The product of its digits is 76800, while the sum is 41.

The spelling of 12126185825 in words is "twelve billion, one hundred twenty-six million, one hundred eighty-five thousand, eight hundred twenty-five".