22220575 has 12 divisors (see below), whose sum is σ = 29673448. Its totient is φ = 16408800.

The previous prime is 22220537. The next prime is 22220603. The reversal of 22220575 is 57502222.

It is not a de Polignac number, because 22220575 - 2⁷ = 22220447 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33861 + ... + 34510.

Almost surely, 2^22220575 is an apocalyptic number.

22220575 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

22220575 is a deficient number, since it is larger than the sum of its proper divisors (7452873).

22220575 is a wasteful number, since it uses less digits than its factorization.

22220575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68394 (or 68389 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 25.

The square root of 22220575 is about 4713.8704903720. The cubic root of 22220575 is about 281.1372749905.

Adding to 22220575 its reverse (57502222), we get a palindrome (79722797).

The spelling of 22220575 in words is "twenty-two million, two hundred twenty thousand, five hundred seventy-five".