12225157 has 12 divisors (see below), whose sum is σ = 14281920. Its totient is φ = 10433976.

The previous prime is 12225149. The next prime is 12225179. The reversal of 12225157 is 75152221.

It is not a de Polignac number, because 12225157 - 2³ = 12225149 is a prime.

It is a Duffinian number.

12225157 is a Rhonda number in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12225107) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 16644 + ... + 17362.

It is an arithmetic number, because the mean of its divisors is an integer number (1190160).

Almost surely, 2^12225157 is an apocalyptic number.

It is an amenable number.

12225157 is a deficient number, since it is larger than the sum of its proper divisors (2056763).

12225157 is an equidigital number, since it uses as much as digits as its factorization.

12225157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1080 (or 1073 counting only the distinct ones).

The product of its digits is 1400, while the sum is 25.

The square root of 12225157 is about 3496.4491988302. The cubic root of 12225157 is about 230.3658763945.

Adding to 12225157 its reverse (75152221), we get a palindrome (87377378).

The spelling of 12225157 in words is "twelve million, two hundred twenty-five thousand, one hundred fifty-seven".