12225526 has 4 divisors (see below), whose sum is σ = 18338292. Its totient is φ = 6112762.

The previous prime is 12225491. The next prime is 12225527. The reversal of 12225526 is 62552221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62552221 = 1493 ⋅41897.

It is a self number, because there is not a number n which added to its sum of digits gives 12225526.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12225527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3056380 + ... + 3056383.

It is an arithmetic number, because the mean of its divisors is an integer number (4584573).

Almost surely, 2^12225526 is an apocalyptic number.

12225526 is a deficient number, since it is larger than the sum of its proper divisors (6112766).

12225526 is an equidigital number, since it uses as much as digits as its factorization.

12225526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6112765.

The product of its digits is 2400, while the sum is 25.

The square root of 12225526 is about 3496.5019662514. The cubic root of 12225526 is about 230.3681941330.

Adding to 12225526 its reverse (62552221), we get a palindrome (74777747).

The spelling of 12225526 in words is "twelve million, two hundred twenty-five thousand, five hundred twenty-six".