12090225 has 24 divisors (see below), whose sum is σ = 22845760. Its totient is φ = 5526720.

The previous prime is 12090173. The next prime is 12090229. The reversal of 12090225 is 52209021.

It is not a de Polignac number, because 12090225 - 2⁷ = 12090097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (12090229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10990 + ... + 12039.

Almost surely, 2^12090225 is an apocalyptic number.

12090225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12090225 is a deficient number, since it is larger than the sum of its proper divisors (10755535).

12090225 is a wasteful number, since it uses less digits than its factorization.

12090225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23049 (or 23044 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 12090225 is about 3477.1000848408. The cubic root of 12090225 is about 229.5152044455.

Adding to 12090225 its reverse (52209021), we get a palindrome (64299246).

The spelling of 12090225 in words is "twelve million, ninety thousand, two hundred twenty-five".