12415225 has 6 divisors (see below), whose sum is σ = 15394910. Its totient is φ = 9932160.

The previous prime is 12415217. The next prime is 12415229. The reversal of 12415225 is 52251421.

It can be written as a sum of positive squares in 3 ways, for example, as 984064 + 11431161 = 992^2 + 3381^2 .

It is not a de Polignac number, because 12415225 - 2³ = 12415217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12415196 and 12415205.

It is not an unprimeable number, because it can be changed into a prime (12415229) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 248280 + ... + 248329.

Almost surely, 2^12415225 is an apocalyptic number.

It is an amenable number.

12415225 is a deficient number, since it is larger than the sum of its proper divisors (2979685).

12415225 is an equidigital number, since it uses as much as digits as its factorization.

12415225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496619 (or 496614 counting only the distinct ones).

The product of its digits is 800, while the sum is 22.

The square root of 12415225 is about 3523.5245138923. The cubic root of 12415225 is about 231.5535968653.

Adding to 12415225 its reverse (52251421), we get a palindrome (64666646).

The spelling of 12415225 in words is "twelve million, four hundred fifteen thousand, two hundred twenty-five".