12513225 has 12 divisors (see below), whose sum is σ = 20688656. Its totient is φ = 6673680.

The previous prime is 12513209. The next prime is 12513227. The reversal of 12513225 is 52231521.

It is not a de Polignac number, because 12513225 - 2⁴ = 12513209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12513227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 83347 + ... + 83496.

Almost surely, 2^12513225 is an apocalyptic number.

12513225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12513225 is a deficient number, since it is larger than the sum of its proper divisors (8175431).

12513225 is a wasteful number, since it uses less digits than its factorization.

12513225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166856 (or 166851 counting only the distinct ones).

The product of its digits is 600, while the sum is 21.

The square root of 12513225 is about 3537.4037089368. The cubic root of 12513225 is about 232.1612595161.

Adding to 12513225 its reverse (52231521), we get a palindrome (64744746).

The spelling of 12513225 in words is "twelve million, five hundred thirteen thousand, two hundred twenty-five".