12225577 has 16 divisors (see below), whose sum is σ = 15457792. Its totient is φ = 9408960.

The previous prime is 12225553. The next prime is 12225611. The reversal of 12225577 is 77552221.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12225577 is a prime.

It is a plaindrome in base 10.

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

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 in 15 ways as a sum of consecutive naturals, for example, 1552 + ... + 5182.

It is an arithmetic number, because the mean of its divisors is an integer number (966112).

Almost surely, 2^12225577 is an apocalyptic number.

It is an amenable number.

12225577 is a deficient number, since it is larger than the sum of its proper divisors (3232215).

12225577 is a wasteful number, since it uses less digits than its factorization.

12225577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3688.

The product of its digits is 9800, while the sum is 31.

The square root of 12225577 is about 3496.5092592470. The cubic root of 12225577 is about 230.3685144672.

Adding to 12225577 its reverse (77552221), we get a palindrome (89777798).

The spelling of 12225577 in words is "twelve million, two hundred twenty-five thousand, five hundred seventy-seven".