22210625 has 10 divisors (see below), whose sum is σ = 27755178. Its totient is φ = 17768000.

The previous prime is 22210621. The next prime is 22210651. The reversal of 22210625 is 52601222.

It can be written as a sum of positive squares in 5 ways, for example, as 5161984 + 17048641 = 2272^2 + 4129^2 .

It is not a de Polignac number, because 22210625 - 2² = 22210621 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22210597 and 22210606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22210621) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 17144 + ... + 18393.

Almost surely, 2^22210625 is an apocalyptic number.

22210625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22210625 is a deficient number, since it is larger than the sum of its proper divisors (5544553).

22210625 is an frugal number, since it uses more digits than its factorization.

22210625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35557 (or 35542 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 22210625 is about 4712.8149762111. The cubic root of 22210625 is about 281.0953058767.

Adding to 22210625 its reverse (52601222), we get a palindrome (74811847).

The spelling of 22210625 in words is "twenty-two million, two hundred ten thousand, six hundred twenty-five".