22531355005 has 4 divisors (see below), whose sum is σ = 27037626012. Its totient is φ = 18025084000.

The previous prime is 22531354999. The next prime is 22531355039. The reversal of 22531355005 is 50055313522.

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 17063935641 + 5467419364 = 130629^2 + 73942^2 .

It is not a de Polignac number, because 22531355005 - 2³ = 22531354997 is a prime.

It is a super-2 number, since 2×22531355005² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (31) 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 an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2253135496 + ... + 2253135505.

It is an arithmetic number, because the mean of its divisors is an integer number (6759406503).

Almost surely, 2^22531355005 is an apocalyptic number.

It is an amenable number.

22531355005 is a deficient number, since it is larger than the sum of its proper divisors (4506271007).

22531355005 is an equidigital number, since it uses as much as digits as its factorization.

22531355005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4506271006.

The product of its (nonzero) digits is 22500, while the sum is 31.

Adding to 22531355005 its reverse (50055313522), we get a palindrome (72586668527).

The spelling of 22531355005 in words is "twenty-two billion, five hundred thirty-one million, three hundred fifty-five thousand, five".