22513528885 has 4 divisors (see below), whose sum is σ = 27016234668. Its totient is φ = 18010823104.

The previous prime is 22513528883. The next prime is 22513528903. The reversal of 22513528885 is 58882531522.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7203426129 + 15310102756 = 84873^2 + 123734^2 .

It is a cyclic number.

It is not a de Polignac number, because 22513528885 - 2¹ = 22513528883 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22513528883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2251352884 + ... + 2251352893.

It is an arithmetic number, because the mean of its divisors is an integer number (6754058667).

Almost surely, 2^22513528885 is an apocalyptic number.

It is an amenable number.

22513528885 is a deficient number, since it is larger than the sum of its proper divisors (4502705783).

22513528885 is an equidigital number, since it uses as much as digits as its factorization.

22513528885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4502705782.

The product of its digits is 1536000, while the sum is 49.

The spelling of 22513528885 in words is "twenty-two billion, five hundred thirteen million, five hundred twenty-eight thousand, eight hundred eighty-five".