12142225 has 6 divisors (see below), whose sum is σ = 15056390. Its totient is φ = 9713760.

The previous prime is 12142219. The next prime is 12142231. The reversal of 12142225 is 52224121.

It is an interprime number because it is at equal distance from previous prime (12142219) and next prime (12142231).

It can be written as a sum of positive squares in 3 ways, for example, as 3969 + 12138256 = 63^2 + 3484^2 .

It is not a de Polignac number, because 12142225 - 2³ = 12142217 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 242820 + ... + 242869.

Almost surely, 2^12142225 is an apocalyptic number.

It is an amenable number.

12142225 is a deficient number, since it is larger than the sum of its proper divisors (2914165).

12142225 is an equidigital number, since it uses as much as digits as its factorization.

12142225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485699 (or 485694 counting only the distinct ones).

The product of its digits is 320, while the sum is 19.

The square root of 12142225 is about 3484.5695573485. The cubic root of 12142225 is about 229.8437817578.

Adding to 12142225 its reverse (52224121), we get a palindrome (64366346).

The spelling of 12142225 in words is "twelve million, one hundred forty-two thousand, two hundred twenty-five".