22250197225 has 9 divisors (see below), whose sum is σ = 27591169413. Its totient is φ = 17799561120.

The previous prime is 22250197223. The next prime is 22250197237. The reversal of 22250197225 is 52279105222.

The square root of 22250197225 is 149165.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 1026369369 + 21223827856 = 32037^2 + 145684^2 .

It is not a de Polignac number, because 22250197225 - 2¹ = 22250197223 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22250197223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 730909 + ... + 760741.

Almost surely, 2^22250197225 is an apocalyptic number.

22250197225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

22250197225 is the 149165-th square number.

22250197225 is the 74583-rd centered octagonal number.

It is an amenable number.

22250197225 is a deficient number, since it is larger than the sum of its proper divisors (5340972188).

22250197225 is an frugal number, since it uses more digits than its factorization.

22250197225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59676 (or 29838 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 37.

The spelling of 22250197225 in words is "twenty-two billion, two hundred fifty million, one hundred ninety-seven thousand, two hundred twenty-five".