12168225 has 36 divisors (see below), whose sum is σ = 22613136. Its totient is φ = 6486480.

The previous prime is 12168223. The next prime is 12168239. The reversal of 12168225 is 52286121.

It is a happy number.

It is not a de Polignac number, because 12168225 - 2¹ = 12168223 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (12168223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 5074 + ... + 7076.

Almost surely, 2^12168225 is an apocalyptic number.

12168225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12168225 is a deficient number, since it is larger than the sum of its proper divisors (10444911).

12168225 is an equidigital number, since it uses as much as digits as its factorization.

12168225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2028 (or 2011 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 12168225 is about 3488.2982957310. The cubic root of 12168225 is about 230.0077187076.

The spelling of 12168225 in words is "twelve million, one hundred sixty-eight thousand, two hundred twenty-five".