22196530225 has 27 divisors (see below), whose sum is σ = 27937122283. Its totient is φ = 17494414640.

The previous prime is 22196530219. The next prime is 22196530229. The reversal of 22196530225 is 52203569122.

It is a happy number.

The square root of 22196530225 is 148985.

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

It can be written as a sum of positive squares in only one way, i.e., 7990750881 + 14205779344 = 89391^2 + 119188^2 .

It is not a de Polignac number, because 22196530225 - 2¹⁷ = 22196399153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22196530229) 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 26 ways as a sum of consecutive naturals, for example, 61828596 + ... + 61828954.

Almost surely, 2^22196530225 is an apocalyptic number.

22196530225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

22196530225 is the 148985-th square number.

22196530225 is the 74493-rd centered octagonal number.

It is an amenable number.

22196530225 is a deficient number, since it is larger than the sum of its proper divisors (5740592058).

22196530225 is an frugal number, since it uses more digits than its factorization.

22196530225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894 (or 447 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 37.

The spelling of 22196530225 in words is "twenty-two billion, one hundred ninety-six million, five hundred thirty thousand, two hundred twenty-five".