12225586 has 4 divisors (see below), whose sum is σ = 18338382. Its totient is φ = 6112792.

The previous prime is 12225553. The next prime is 12225611. The reversal of 12225586 is 68552221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 68552221 = 1031 ⋅66491.

It can be written as a sum of positive squares in only one way, i.e., 7667361 + 4558225 = 2769^2 + 2135^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3056395 + ... + 3056398.

Almost surely, 2^12225586 is an apocalyptic number.

12225586 is a deficient number, since it is larger than the sum of its proper divisors (6112796).

12225586 is an equidigital number, since it uses as much as digits as its factorization.

12225586 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6112795.

The product of its digits is 9600, while the sum is 31.

The square root of 12225586 is about 3496.5105462446. The cubic root of 12225586 is about 230.3685709967.

The spelling of 12225586 in words is "twelve million, two hundred twenty-five thousand, five hundred eighty-six".