22505223748 has 48 divisors (see below), whose sum is σ = 45248361984. Its totient is φ = 9594224640.

The previous prime is 22505223743. The next prime is 22505223749. The reversal of 22505223748 is 84732250522.

It is a self number, because there is not a number n which added to its sum of digits gives 22505223748.

It is not an unprimeable number, because it can be changed into a prime (22505223743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6553840 + ... + 6557272.

It is an arithmetic number, because the mean of its divisors is an integer number (942674208).

Almost surely, 2^22505223748 is an apocalyptic number.

22505223748 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

22505223748 is an abundant number, since it is smaller than the sum of its proper divisors (22743138236).

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

22505223748 is a wasteful number, since it uses less digits than its factorization.

22505223748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4612 (or 4610 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 40.

The spelling of 22505223748 in words is "twenty-two billion, five hundred five million, two hundred twenty-three thousand, seven hundred forty-eight".