23225225 has 6 divisors (see below), whose sum is σ = 28799310. Its totient is φ = 18580160.

The previous prime is 23225221. The next prime is 23225243. The reversal of 23225225 is 52252232.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 491401 + 22733824 = 701^2 + 4768^2 .

It is not a de Polignac number, because 23225225 - 2² = 23225221 is a prime.

It is a super-2 number, since 2×23225225² = 1078822152601250, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23225225.

It is not an unprimeable number, because it can be changed into a prime (23225221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 464480 + ... + 464529.

It is an arithmetic number, because the mean of its divisors is an integer number (4799885).

Almost surely, 2^23225225 is an apocalyptic number.

23225225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23225225 is a deficient number, since it is larger than the sum of its proper divisors (5574085).

23225225 is an equidigital number, since it uses as much as digits as its factorization.

23225225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929019 (or 929014 counting only the distinct ones).

The product of its digits is 2400, while the sum is 23.

The square root of 23225225 is about 4819.2556479191. The cubic root of 23225225 is about 285.3119596268.

Adding to 23225225 its reverse (52252232), we get a palindrome (75477457).

The spelling of 23225225 in words is "twenty-three million, two hundred twenty-five thousand, two hundred twenty-five".