12504225 has 12 divisors (see below), whose sum is σ = 20673776. Its totient is φ = 6668880.

The previous prime is 12504169. The next prime is 12504227. The reversal of 12504225 is 52240521.

It is a happy number.

It is not a de Polignac number, because 12504225 - 2⁶ = 12504161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12504227) by changing a digit.

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, 83287 + ... + 83436.

Almost surely, 2^12504225 is an apocalyptic number.

12504225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12504225 is a deficient number, since it is larger than the sum of its proper divisors (8169551).

12504225 is a wasteful number, since it uses less digits than its factorization.

12504225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166736 (or 166731 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 12504225 is about 3536.1313606822. The cubic root of 12504225 is about 232.1055863523.

Adding to 12504225 its reverse (52240521), we get a palindrome (64744746).

The spelling of 12504225 in words is "twelve million, five hundred four thousand, two hundred twenty-five".