12525222 has 16 divisors (see below), whose sum is σ = 25309872. Its totient is φ = 4131840.

The previous prime is 12525217. The next prime is 12525223. The reversal of 12525222 is 22252521.

It is a super-2 number, since 2×12525222² = 313762372298568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12525223) 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, 10179 + ... + 11342.

It is an arithmetic number, because the mean of its divisors is an integer number (1581867).

Almost surely, 2^12525222 is an apocalyptic number.

12525222 is an abundant number, since it is smaller than the sum of its proper divisors (12784650).

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

12525222 is a wasteful number, since it uses less digits than its factorization.

12525222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21623.

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

The square root of 12525222 is about 3539.0990378909. The cubic root of 12525222 is about 232.2354303498.

Adding to 12525222 its reverse (22252521), we get a palindrome (34777743).

The spelling of 12525222 in words is "twelve million, five hundred twenty-five thousand, two hundred twenty-two".