22301225 has 6 divisors (see below), whose sum is σ = 27653550. Its totient is φ = 17840960.

The previous prime is 22301207. The next prime is 22301239. The reversal of 22301225 is 52210322.

It can be written as a sum of positive squares in 3 ways, for example, as 1607824 + 20693401 = 1268^2 + 4549^2 .

It is not a de Polignac number, because 22301225 - 2¹⁸ = 22039081 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 446000 + ... + 446049.

It is an arithmetic number, because the mean of its divisors is an integer number (4608925).

Almost surely, 2^22301225 is an apocalyptic number.

22301225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22301225 is a deficient number, since it is larger than the sum of its proper divisors (5352325).

22301225 is an equidigital number, since it uses as much as digits as its factorization.

22301225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 892059 (or 892054 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 22301225 is about 4722.4172835530. The cubic root of 22301225 is about 281.4769953448.

Adding to 22301225 its reverse (52210322), we get a palindrome (74511547).

The spelling of 22301225 in words is "twenty-two million, three hundred one thousand, two hundred twenty-five".