12042225 has 72 divisors (see below), whose sum is σ = 24373440. Its totient is φ = 5639040.

The previous prime is 12042197. The next prime is 12042241. The reversal of 12042225 is 52224021.

It is not a de Polignac number, because 12042225 - 2⁶ = 12042161 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12042198 and 12042207.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 67186 + ... + 67364.

It is an arithmetic number, because the mean of its divisors is an integer number (338520).

Almost surely, 2^12042225 is an apocalyptic number.

12042225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12042225 is an abundant number, since it is smaller than the sum of its proper divisors (12331215).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12042225 is a wasteful number, since it uses less digits than its factorization.

12042225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231 (or 223 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 12042225 is about 3470.1909169381. The cubic root of 12042225 is about 229.2110650433.

Adding to 12042225 its reverse (52224021), we get a palindrome (64266246).

The spelling of 12042225 in words is "twelve million, forty-two thousand, two hundred twenty-five".