22255718436 has 240 divisors, whose sum is σ = 73467668736. Its totient is φ = 5724297216.

The previous prime is 22255718371. The next prime is 22255718467. The reversal of 22255718436 is 63481755222.

22255718436 is a `hidden beast` number, since 22 + 25 + 571 + 8 + 4 + 36 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 22255718391 and 22255718400.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 874240 + ... + 899336.

Almost surely, 2^22255718436 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22255718436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36733834368).

22255718436 is an abundant number, since it is smaller than the sum of its proper divisors (51211950300).

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

22255718436 is a wasteful number, since it uses less digits than its factorization.

22255718436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25160 (or 25149 counting only the distinct ones).

The product of its digits is 806400, while the sum is 45.

The spelling of 22255718436 in words is "twenty-two billion, two hundred fifty-five million, seven hundred eighteen thousand, four hundred thirty-six".