22444225 has 12 divisors (see below), whose sum is σ = 29296240. Its totient is φ = 17010000.

The previous prime is 22444223. The next prime is 22444229. The reversal of 22444225 is 52244422.

It is not a de Polignac number, because 22444225 - 2¹ = 22444223 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 22444225.

It is not an unprimeable number, because it can be changed into a prime (22444223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23151 + ... + 24100.

Almost surely, 2^22444225 is an apocalyptic number.

22444225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22444225 is a deficient number, since it is larger than the sum of its proper divisors (6852015).

22444225 is a wasteful number, since it uses less digits than its factorization.

22444225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47280 (or 47275 counting only the distinct ones).

The product of its digits is 5120, while the sum is 25.

The square root of 22444225 is about 4737.5336410415. The cubic root of 22444225 is about 282.0773432707.

Adding to 22444225 its reverse (52244422), we get a palindrome (74688647).

The spelling of 22444225 in words is "twenty-two million, four hundred forty-four thousand, two hundred twenty-five".