12132225 has 36 divisors (see below), whose sum is σ = 24837696. Its totient is φ = 5545440.

The previous prime is 12132223. The next prime is 12132259. The reversal of 12132225 is 52223121.

12132225 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12132225 - 2¹ = 12132223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12132198 and 12132207.

It is not an unprimeable number, because it can be changed into a prime (12132223) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2277 + ... + 5426.

It is an arithmetic number, because the mean of its divisors is an integer number (689936).

Almost surely, 2^12132225 is an apocalyptic number.

12132225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12132225 is an abundant number, since it is smaller than the sum of its proper divisors (12705471).

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

12132225 is a wasteful number, since it uses less digits than its factorization.

12132225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7726 (or 7718 counting only the distinct ones).

The product of its digits is 240, while the sum is 18.

The square root of 12132225 is about 3483.1343643334. The cubic root of 12132225 is about 229.7806667717.

Adding to 12132225 its reverse (52223121), we get a palindrome (64355346).

The spelling of 12132225 in words is "twelve million, one hundred thirty-two thousand, two hundred twenty-five".