22505311000 has 64 divisors (see below), whose sum is σ = 52684632000. Its totient is φ = 8998329600.

The previous prime is 22505310983. The next prime is 22505311001. The reversal of 22505311000 is 11350522.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22505311001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4726621 + ... + 4731379.

It is an arithmetic number, because the mean of its divisors is an integer number (823197375).

Almost surely, 2^22505311000 is an apocalyptic number.

22505311000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22505311000 is an abundant number, since it is smaller than the sum of its proper divisors (30179321000).

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

22505311000 is a wasteful number, since it uses less digits than its factorization.

22505311000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9509 (or 9495 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 19.

Adding to 22505311000 its reverse (11350522), we get a palindrome (22516661522).

The spelling of 22505311000 in words is "twenty-two billion, five hundred five million, three hundred eleven thousand".