22247025778 has 16 divisors (see below), whose sum is σ = 34103744640. Its totient is φ = 10879433136.

The previous prime is 22247025769. The next prime is 22247025781. The reversal of 22247025778 is 87752074222.

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, 59608 + ... + 219196.

It is an arithmetic number, because the mean of its divisors is an integer number (2131484040).

Almost surely, 2^22247025778 is an apocalyptic number.

22247025778 is a deficient number, since it is larger than the sum of its proper divisors (11856718862).

22247025778 is a wasteful number, since it uses less digits than its factorization.

22247025778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161121.

The product of its (nonzero) digits is 878080, while the sum is 46.

The spelling of 22247025778 in words is "twenty-two billion, two hundred forty-seven million, twenty-five thousand, seven hundred seventy-eight".