12256205 has 16 divisors (see below), whose sum is σ = 15952944. Its totient is φ = 8985600.

The previous prime is 12256187. The next prime is 12256207. The reversal of 12256205 is 50265221.

It can be written as a sum of positive squares in 8 ways, for example, as 5635876 + 6620329 = 2374^2 + 2573^2 .

It is a de Polignac number, because none of the positive numbers 2^k-12256205 is a prime.

It is a super-2 number, since 2×12256205² = 300429122004050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12256207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9605 + ... + 10805.

It is an arithmetic number, because the mean of its divisors is an integer number (997059).

Almost surely, 2^12256205 is an apocalyptic number.

It is an amenable number.

12256205 is a deficient number, since it is larger than the sum of its proper divisors (3696739).

12256205 is a wasteful number, since it uses less digits than its factorization.

12256205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1376.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 12256205 is about 3500.8863163490. The cubic root of 12256205 is about 230.5607301517.

The spelling of 12256205 in words is "twelve million, two hundred fifty-six thousand, two hundred five".