22150225 has 12 divisors (see below), whose sum is σ = 27855360. Its totient is φ = 17469200.

The previous prime is 22150223. The next prime is 22150243. The reversal of 22150225 is 52205122.

It is not a de Polignac number, because 22150225 - 2¹ = 22150223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22150223) 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 11 ways as a sum of consecutive naturals, for example, 4465 + ... + 8014.

It is an arithmetic number, because the mean of its divisors is an integer number (2321280).

Almost surely, 2^22150225 is an apocalyptic number.

22150225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22150225 is a deficient number, since it is larger than the sum of its proper divisors (5705135).

22150225 is a wasteful number, since it uses less digits than its factorization.

22150225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12560 (or 12555 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 22150225 is about 4706.4025539684. The cubic root of 22150225 is about 280.8402692293.

Adding to 22150225 its reverse (52205122), we get a palindrome (74355347).

The spelling of 22150225 in words is "twenty-two million, one hundred fifty thousand, two hundred twenty-five".