22016225 has 24 divisors (see below), whose sum is σ = 34039488. Its totient is φ = 13723200.

The previous prime is 22016219. The next prime is 22016261. The reversal of 22016225 is 52261022.

It is not a de Polignac number, because 22016225 - 2⁴ = 22016209 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22016197 and 22016206.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3794 + ... + 7643.

It is an arithmetic number, because the mean of its divisors is an integer number (1418312).

Almost surely, 2^22016225 is an apocalyptic number.

22016225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22016225 is a deficient number, since it is larger than the sum of its proper divisors (12023263).

22016225 is a wasteful number, since it uses less digits than its factorization.

22016225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11465 (or 11460 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 22016225 is about 4692.1450318591. The cubic root of 22016225 is about 280.2727996055.

Adding to 22016225 its reverse (52261022), we get a palindrome (74277247).

The spelling of 22016225 in words is "twenty-two million, sixteen thousand, two hundred twenty-five".