22225750 has 16 divisors (see below), whose sum is σ = 41607072. Its totient is φ = 8890200.

The previous prime is 22225747. The next prime is 22225759. The reversal of 22225750 is 5752222.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22225759) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44202 + ... + 44701.

It is an arithmetic number, because the mean of its divisors is an integer number (2600442).

Almost surely, 2^22225750 is an apocalyptic number.

22225750 is a deficient number, since it is larger than the sum of its proper divisors (19381322).

22225750 is an equidigital number, since it uses as much as digits as its factorization.

22225750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88920 (or 88910 counting only the distinct ones).

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

The square root of 22225750 is about 4714.4193703997. The cubic root of 22225750 is about 281.1590981951.

Adding to 22225750 its reverse (5752222), we get a palindrome (27977972).

The spelling of 22225750 in words is "twenty-two million, two hundred twenty-five thousand, seven hundred fifty".