12581224 has 32 divisors (see below), whose sum is σ = 25315200. Its totient is φ = 5840640.

The previous prime is 12581183. The next prime is 12581227. The reversal of 12581224 is 42218521.

It is not an unprimeable number, because it can be changed into a prime (12581227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10159 + ... + 11329.

It is an arithmetic number, because the mean of its divisors is an integer number (791100).

Almost surely, 2^12581224 is an apocalyptic number.

It is an amenable number.

12581224 is an abundant number, since it is smaller than the sum of its proper divisors (12733976).

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

12581224 is a wasteful number, since it uses less digits than its factorization.

12581224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1273 (or 1269 counting only the distinct ones).

The product of its digits is 1280, while the sum is 25.

The square root of 12581224 is about 3547.0021144623. The cubic root of 12581224 is about 232.5810346892.

Adding to 12581224 its reverse (42218521), we get a palindrome (54799745).

The spelling of 12581224 in words is "twelve million, five hundred eighty-one thousand, two hundred twenty-four".