23305225 has 6 divisors (see below), whose sum is σ = 28898510. Its totient is φ = 18644160.

The previous prime is 23305223. The next prime is 23305231. The reversal of 23305225 is 52250332.

It can be written as a sum of positive squares in 3 ways, for example, as 6091024 + 17214201 = 2468^2 + 4149^2 .

It is not a de Polignac number, because 23305225 - 2¹ = 23305223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23305196 and 23305205.

It is not an unprimeable number, because it can be changed into a prime (23305223) 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, 466080 + ... + 466129.

Almost surely, 2^23305225 is an apocalyptic number.

23305225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23305225 is a deficient number, since it is larger than the sum of its proper divisors (5593285).

23305225 is an equidigital number, since it uses as much as digits as its factorization.

23305225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 932219 (or 932214 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 22.

The square root of 23305225 is about 4827.5485497300. The cubic root of 23305225 is about 285.6391728144.

Adding to 23305225 its reverse (52250332), we get a palindrome (75555557).

The spelling of 23305225 in words is "twenty-three million, three hundred five thousand, two hundred twenty-five".