It is an unprimeable number.
Almost surely, 222185000 is an apocalyptic number.
22185000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 22185000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41119650).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
22185000 is a wasteful number, since it uses less digits than its factorization.
22185000 is an evil number, because the sum of its binary digits is even.
The square root of 22185000 is about 4710.0955404323. The cubic root of 22185000 is about 280.9871618523.
The spelling of 22185000 in words is "twenty-two million, one hundred eighty-five thousand".