22195145256 has 32 divisors (see below), whose sum is σ = 55887064800. Its totient is φ = 7345154880.

The previous prime is 22195145239. The next prime is 22195145261. The reversal of 22195145256 is 65254159122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3323275 + ... + 3329946.

It is an arithmetic number, because the mean of its divisors is an integer number (1746470775).

Almost surely, 2^22195145256 is an apocalyptic number.

It is an amenable number.

22195145256 is an abundant number, since it is smaller than the sum of its proper divisors (33691919544).

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

22195145256 is a wasteful number, since it uses less digits than its factorization.

22195145256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6653369 (or 6653365 counting only the distinct ones).

The product of its digits is 216000, while the sum is 42.

The spelling of 22195145256 in words is "twenty-two billion, one hundred ninety-five million, one hundred forty-five thousand, two hundred fifty-six".