12225645 has 48 divisors (see below), whose sum is σ = 22713600. Its totient is φ = 6065280.

The previous prime is 12225643. The next prime is 12225649. The reversal of 12225645 is 54652221.

12225645 is a `hidden beast` number, since 12 + 2 + 2 + 5 + 645 = 666.

It is not a de Polignac number, because 12225645 - 2¹ = 12225643 is a prime.

It is a super-3 number, since 3×12225645³ (a number of 22 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12225641) 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 47 ways as a sum of consecutive naturals, for example, 67455 + ... + 67635.

It is an arithmetic number, because the mean of its divisors is an integer number (473200).

Almost surely, 2^12225645 is an apocalyptic number.

12225645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12225645 is a deficient number, since it is larger than the sum of its proper divisors (10487955).

12225645 is a wasteful number, since it uses less digits than its factorization.

12225645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290 (or 287 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 12225645 is about 3496.5189832175. The cubic root of 12225645 is about 230.3689415781.

Adding to 12225645 its reverse (54652221), we get a palindrome (66877866).

The spelling of 12225645 in words is "twelve million, two hundred twenty-five thousand, six hundred forty-five".