12188125 has 10 divisors (see below), whose sum is σ = 15231062. Its totient is φ = 9750000.

The previous prime is 12188123. The next prime is 12188159. The reversal of 12188125 is 52188121.

It can be written as a sum of positive squares in 5 ways, for example, as 4553956 + 7634169 = 2134^2 + 2763^2 .

It is not a de Polignac number, because 12188125 - 2¹ = 12188123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12188093 and 12188102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12188123) by changing a digit.

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 9 ways as a sum of consecutive naturals, for example, 9126 + ... + 10375.

Almost surely, 2^12188125 is an apocalyptic number.

It is an amenable number.

12188125 is a deficient number, since it is larger than the sum of its proper divisors (3042937).

12188125 is an frugal number, since it uses more digits than its factorization.

12188125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19521 (or 19506 counting only the distinct ones).

The product of its digits is 1280, while the sum is 28.

The square root of 12188125 is about 3491.1495241539. The cubic root of 12188125 is about 230.1330358265.

The spelling of 12188125 in words is "twelve million, one hundred eighty-eight thousand, one hundred twenty-five".