12231225 has 18 divisors (see below), whose sum is σ = 21907886. Its totient is φ = 6523200.

The previous prime is 12231203. The next prime is 12231227. The reversal of 12231225 is 52213221.

12231225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 1022121 + 11209104 = 1011^2 + 3348^2 .

It is not a de Polignac number, because 12231225 - 2¹¹ = 12229177 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12231198 and 12231207.

It is not an unprimeable number, because it can be changed into a prime (12231227) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 26956 + ... + 27405.

Almost surely, 2^12231225 is an apocalyptic number.

12231225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12231225 is a deficient number, since it is larger than the sum of its proper divisors (9676661).

12231225 is a wasteful number, since it uses less digits than its factorization.

12231225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54377 (or 54369 counting only the distinct ones).

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

The square root of 12231225 is about 3497.3168286559. The cubic root of 12231225 is about 230.4039843965.

Adding to 12231225 its reverse (52213221), we get a palindrome (64444446).

The spelling of 12231225 in words is "twelve million, two hundred thirty-one thousand, two hundred twenty-five".