12381225 has 12 divisors (see below), whose sum is σ = 20470416. Its totient is φ = 6603280.

The previous prime is 12381223. The next prime is 12381227. The reversal of 12381225 is 52218321.

It is an interprime number because it is at equal distance from previous prime (12381223) and next prime (12381227).

It is not a de Polignac number, because 12381225 - 2¹ = 12381223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12381195 and 12381204.

It is not an unprimeable number, because it can be changed into a prime (12381223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 82467 + ... + 82616.

It is an arithmetic number, because the mean of its divisors is an integer number (1705868).

Almost surely, 2^12381225 is an apocalyptic number.

12381225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12381225 is a deficient number, since it is larger than the sum of its proper divisors (8089191).

12381225 is a wasteful number, since it uses less digits than its factorization.

12381225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165096 (or 165091 counting only the distinct ones).

The product of its digits is 960, while the sum is 24.

The square root of 12381225 is about 3518.6964916003. The cubic root of 12381225 is about 231.3420281391.

Adding to 12381225 its reverse (52218321), we get a palindrome (64599546).

The spelling of 12381225 in words is "twelve million, three hundred eighty-one thousand, two hundred twenty-five".