12406225 has 24 divisors (see below), whose sum is σ = 16873920. Its totient is φ = 8992320.

The previous prime is 12406217. The next prime is 12406253. The reversal of 12406225 is 52260421.

12406225 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12406225 - 2³ = 12406217 is a prime.

It is a zygodrome in base 5.

It is a junction number, because it is equal to n+sod(n) for n = 12406196 and 12406205.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18852 + ... + 19498.

It is an arithmetic number, because the mean of its divisors is an integer number (703080).

Almost surely, 2^12406225 is an apocalyptic number.

It is an amenable number.

12406225 is a deficient number, since it is larger than the sum of its proper divisors (4467695).

12406225 is a wasteful number, since it uses less digits than its factorization.

12406225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729 (or 724 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 12406225 is about 3522.2471520323. The cubic root of 12406225 is about 231.4976310076.

Adding to 12406225 its reverse (52260421), we get a palindrome (64666646).

The spelling of 12406225 in words is "twelve million, four hundred six thousand, two hundred twenty-five".