22272525 has 36 divisors (see below), whose sum is σ = 43524000. Its totient is φ = 10797600.

The previous prime is 22272521. The next prime is 22272577. The reversal of 22272525 is 52527222.

It is not a de Polignac number, because 22272525 - 2² = 22272521 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22272521) 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 35 ways as a sum of consecutive naturals, for example, 2025 + ... + 6974.

It is an arithmetic number, because the mean of its divisors is an integer number (1209000).

Almost surely, 2^22272525 is an apocalyptic number.

22272525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22272525 is a deficient number, since it is larger than the sum of its proper divisors (21251475).

22272525 is a wasteful number, since it uses less digits than its factorization.

22272525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9026 (or 9018 counting only the distinct ones).

The product of its digits is 5600, while the sum is 27.

The square root of 22272525 is about 4719.3776072698. The cubic root of 22272525 is about 281.3561969332.

Adding to 22272525 its reverse (52527222), we get a palindrome (74799747).

The spelling of 22272525 in words is "twenty-two million, two hundred seventy-two thousand, five hundred twenty-five".