22505422 has 8 divisors (see below), whose sum is σ = 33833376. Its totient is φ = 11227632.

The previous prime is 22505387. The next prime is 22505423. The reversal of 22505422 is 22450522.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 22505393 and 22505402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22505423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11398 + ... + 13225.

It is an arithmetic number, because the mean of its divisors is an integer number (4229172).

Almost surely, 2^22505422 is an apocalyptic number.

22505422 is a deficient number, since it is larger than the sum of its proper divisors (11327954).

22505422 is a wasteful number, since it uses less digits than its factorization.

22505422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25082.

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 22505422 is about 4743.9879848077. The cubic root of 22505422 is about 282.3334837201. Note that the first 3 decimals are identical.

Adding to 22505422 its reverse (22450522), we get a palindrome (44955944).

The spelling of 22505422 in words is "twenty-two million, five hundred five thousand, four hundred twenty-two".