12401225 has 12 divisors (see below), whose sum is σ = 15439116. Its totient is φ = 9881280.

The previous prime is 12401189. The next prime is 12401251. The reversal of 12401225 is 52210421.

12401225 is digitally balanced in base 3, 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 6 ways, for example, as 67081 + 12334144 = 259^2 + 3512^2 .

It is a de Polignac number, because none of the positive numbers 2^k-12401225 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

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, 6479 + ... + 8171.

It is an arithmetic number, because the mean of its divisors is an integer number (1286593).

Almost surely, 2^12401225 is an apocalyptic number.

It is an amenable number.

12401225 is a deficient number, since it is larger than the sum of its proper divisors (3037891).

12401225 is a wasteful number, since it uses less digits than its factorization.

12401225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1996 (or 1991 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 12401225 is about 3521.5373063479. The cubic root of 12401225 is about 231.4665271683.

Adding to 12401225 its reverse (52210421), we get a palindrome (64611646).

The spelling of 12401225 in words is "twelve million, four hundred one thousand, two hundred twenty-five".