22505911008 has 96 divisors (see below), whose sum is σ = 71071338240. Its totient is φ = 6091822080.

The previous prime is 22505911003. The next prime is 22505911009. The reversal of 22505911008 is 80011950522.

It is a tau number, because it is divible by the number of its divisors (96).

It is a self number, because there is not a number n which added to its sum of digits gives 22505911008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22505911003) 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, 868573 + ... + 894108.

It is an arithmetic number, because the mean of its divisors is an integer number (740326440).

Almost surely, 2^22505911008 is an apocalyptic number.

22505911008 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

22505911008 is an abundant number, since it is smaller than the sum of its proper divisors (48565427232).

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

22505911008 is a wasteful number, since it uses less digits than its factorization.

22505911008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1762720 (or 1762712 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 33.

The spelling of 22505911008 in words is "twenty-two billion, five hundred five million, nine hundred eleven thousand, eight".