22225637506 has 8 divisors (see below), whose sum is σ = 33347475324. Its totient is φ = 11109812400.

The previous prime is 22225637477. The next prime is 22225637509. The reversal of 22225637506 is 60573652222.

It can be written as a sum of positive squares in 2 ways, for example, as 21582254281 + 643383225 = 146909^2 + 25365^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×22225637506² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22225637509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1493925 + ... + 1508728.

Almost surely, 2^22225637506 is an apocalyptic number.

22225637506 is a deficient number, since it is larger than the sum of its proper divisors (11121837818).

22225637506 is a wasteful number, since it uses less digits than its factorization.

22225637506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3006356.

The product of its (nonzero) digits is 302400, while the sum is 40.

The spelling of 22225637506 in words is "twenty-two billion, two hundred twenty-five million, six hundred thirty-seven thousand, five hundred six".