22123225 has 12 divisors (see below), whose sum is σ = 28175404. Its totient is φ = 17219520.

The previous prime is 22123187. The next prime is 22123237. The reversal of 22123225 is 52232122.

It can be written as a sum of positive squares in 6 ways, for example, as 444889 + 21678336 = 667^2 + 4656^2 .

It is not a de Polignac number, because 22123225 - 2⁷ = 22123097 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11034 + ... + 12883.

Almost surely, 2^22123225 is an apocalyptic number.

22123225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22123225 is a deficient number, since it is larger than the sum of its proper divisors (6052179).

22123225 is a wasteful number, since it uses less digits than its factorization.

22123225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23964 (or 23959 counting only the distinct ones).

The product of its digits is 480, while the sum is 19.

The square root of 22123225 is about 4703.5332464010. The cubic root of 22123225 is about 280.7261128219.

Adding to 22123225 its reverse (52232122), we get a palindrome (74355347).

The spelling of 22123225 in words is "twenty-two million, one hundred twenty-three thousand, two hundred twenty-five".