22420425218 has 4 divisors (see below), whose sum is σ = 33630637830. Its totient is φ = 11210212608.

The previous prime is 22420425217. The next prime is 22420425221. The reversal of 22420425218 is 81252402422.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 13046893729 + 9373531489 = 114223^2 + 96817^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22420425217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5605106303 + ... + 5605106306.

Almost surely, 2^22420425218 is an apocalyptic number.

22420425218 is a deficient number, since it is larger than the sum of its proper divisors (11210212612).

22420425218 is a wasteful number, since it uses less digits than its factorization.

22420425218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11210212611.

The product of its (nonzero) digits is 20480, while the sum is 32.

The spelling of 22420425218 in words is "twenty-two billion, four hundred twenty million, four hundred twenty-five thousand, two hundred eighteen".