22225229 has 4 divisors (see below), whose sum is σ = 23934876. Its totient is φ = 20515584.

The previous prime is 22225211. The next prime is 22225277. The reversal of 22225229 is 92252222.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9012004 + 13213225 = 3002^2 + 3635^2 .

It is a cyclic number.

It is not a de Polignac number, because 22225229 - 2⁸ = 22224973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22225198 and 22225207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22225279) 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 3 ways as a sum of consecutive naturals, for example, 854804 + ... + 854829.

It is an arithmetic number, because the mean of its divisors is an integer number (5983719).

Almost surely, 2^22225229 is an apocalyptic number.

It is an amenable number.

22225229 is a deficient number, since it is larger than the sum of its proper divisors (1709647).

22225229 is a wasteful number, since it uses less digits than its factorization.

22225229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1709646.

The product of its digits is 2880, while the sum is 26.

The square root of 22225229 is about 4714.3641140667. The cubic root of 22225229 is about 281.1569012684.

The spelling of 22225229 in words is "twenty-two million, two hundred twenty-five thousand, two hundred twenty-nine".