22225660 has 12 divisors (see below), whose sum is σ = 46673928. Its totient is φ = 8890256.

The previous prime is 22225639. The next prime is 22225661. The reversal of 22225660 is 6652222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22225661) 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 in 3 ways as a sum of consecutive naturals, for example, 555622 + ... + 555661.

It is an arithmetic number, because the mean of its divisors is an integer number (3889494).

Almost surely, 2^22225660 is an apocalyptic number.

22225660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22225660 is an abundant number, since it is smaller than the sum of its proper divisors (24448268).

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

22225660 is a wasteful number, since it uses less digits than its factorization.

22225660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111292 (or 1111290 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 22225660 is about 4714.4098252061. The cubic root of 22225660 is about 281.1587186901.

Adding to 22225660 its reverse (6652222), we get a palindrome (28877882).

The spelling of 22225660 in words is "twenty-two million, two hundred twenty-five thousand, six hundred sixty".