12189825 has 24 divisors (see below), whose sum is σ = 22394400. Its totient is φ = 6500880.

The previous prime is 12189817. The next prime is 12189847. The reversal of 12189825 is 52898121.

It is not a de Polignac number, because 12189825 - 2³ = 12189817 is a prime.

It is a zygodrome in base 5.

It is a self number, because there is not a number n which added to its sum of digits gives 12189825.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8355 + ... + 9704.

It is an arithmetic number, because the mean of its divisors is an integer number (933100).

Almost surely, 2^12189825 is an apocalyptic number.

12189825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12189825 is a deficient number, since it is larger than the sum of its proper divisors (10204575).

12189825 is a wasteful number, since it uses less digits than its factorization.

12189825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18078 (or 18067 counting only the distinct ones).

The product of its digits is 11520, while the sum is 36.

The square root of 12189825 is about 3491.3929884790. The cubic root of 12189825 is about 230.1437349830.

The spelling of 12189825 in words is "twelve million, one hundred eighty-nine thousand, eight hundred twenty-five".