22152551020225 has 12 divisors (see below), whose sum is σ = 27470303953324. Its totient is φ = 17721304888320.

The previous prime is 22152551020207. The next prime is 22152551020247. The reversal of 22152551020225 is 52202015525122.

It can be written as a sum of positive squares in 6 ways, for example, as 1700802005904 + 20451749014321 = 1304148^2 + 4522361^2 .

It is a de Polignac number, because none of the positive numbers 2^k-22152551020225 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17783724 + ... + 18988573.

Almost surely, 2^{22152551020225} is an apocalyptic number.

22152551020225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22152551020225 is a deficient number, since it is larger than the sum of its proper divisors (5317752933099).

22152551020225 is a wasteful number, since it uses less digits than its factorization.

22152551020225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36796404 (or 36796399 counting only the distinct ones).

The product of its (nonzero) digits is 40000, while the sum is 34.

Adding to 22152551020225 its reverse (52202015525122), we get a palindrome (74354566545347).

The spelling of 22152551020225 in words is "twenty-two trillion, one hundred fifty-two billion, five hundred fifty-one million, twenty thousand, two hundred twenty-five".