22425566 has 8 divisors (see below), whose sum is σ = 33853080. Its totient is φ = 11141208.

The previous prime is 22425553. The next prime is 22425577. The reversal of 22425566 is 66552422.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35396 + ... + 36023.

It is an arithmetic number, because the mean of its divisors is an integer number (4231635).

Almost surely, 2^22425566 is an apocalyptic number.

22425566 is a deficient number, since it is larger than the sum of its proper divisors (11427514).

22425566 is a wasteful number, since it uses less digits than its factorization.

22425566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71578.

The product of its digits is 28800, while the sum is 32.

The square root of 22425566 is about 4735.5639579674. The cubic root of 22425566 is about 281.9991532929. Note that the first 3 decimals are identical.

Adding to 22425566 its reverse (66552422), we get a palindrome (88977988).

The spelling of 22425566 in words is "twenty-two million, four hundred twenty-five thousand, five hundred sixty-six".