22125523401636 has 192 divisors, whose sum is σ = 56000800407552. Its totient is φ = 6781635197568.

The previous prime is 22125523401617. The next prime is 22125523401637. The reversal of 22125523401636 is 63610432552122.

It is not an unprimeable number, because it can be changed into a prime (22125523401637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 199196331 + ... + 199307373.

It is an arithmetic number, because the mean of its divisors is an integer number (291670835456).

Almost surely, 2^{22125523401636} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22125523401636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28000400203776).

22125523401636 is an abundant number, since it is smaller than the sum of its proper divisors (33875277005916).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22125523401636 is a wasteful number, since it uses less digits than its factorization.

22125523401636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111382 (or 111380 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 42.

Adding to 22125523401636 its reverse (63610432552122), we get a palindrome (85735955953758).

The spelling of 22125523401636 in words is "twenty-two trillion, one hundred twenty-five billion, five hundred twenty-three million, four hundred one thousand, six hundred thirty-six".