12522258 has 96 divisors (see below), whose sum is σ = 33696000. Its totient is φ = 3282048.

The previous prime is 12522253. The next prime is 12522269. The reversal of 12522258 is 85222521.

12522258 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (12522253) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 83968 + ... + 84116.

It is an arithmetic number, because the mean of its divisors is an integer number (351000).

Almost surely, 2^12522258 is an apocalyptic number.

12522258 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12522258, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16848000).

12522258 is an abundant number, since it is smaller than the sum of its proper divisors (21173742).

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

12522258 is a wasteful number, since it uses less digits than its factorization.

12522258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216 (or 213 counting only the distinct ones).

The product of its digits is 3200, while the sum is 27.

The square root of 12522258 is about 3538.6802624707. The cubic root of 12522258 is about 232.2171099794.

Adding to 12522258 its reverse (85222521), we get a palindrome (97744779).

The spelling of 12522258 in words is "twelve million, five hundred twenty-two thousand, two hundred fifty-eight".