22255517420 has 12 divisors (see below), whose sum is σ = 46736586624. Its totient is φ = 8902206960.

The previous prime is 22255517371. The next prime is 22255517423. The reversal of 22255517420 is 2471555222.

It is not an unprimeable number, because it can be changed into a prime (22255517423) 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, 556387916 + ... + 556387955.

It is an arithmetic number, because the mean of its divisors is an integer number (3894715552).

Almost surely, 2^22255517420 is an apocalyptic number.

22255517420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22255517420 is an abundant number, since it is smaller than the sum of its proper divisors (24481069204).

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

22255517420 is a wasteful number, since it uses less digits than its factorization.

22255517420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1112775880 (or 1112775878 counting only the distinct ones).

The product of its (nonzero) digits is 56000, while the sum is 35.

The spelling of 22255517420 in words is "twenty-two billion, two hundred fifty-five million, five hundred seventeen thousand, four hundred twenty".