23240225 has 6 divisors (see below), whose sum is σ = 28817910. Its totient is φ = 18592160.

The previous prime is 23240213. The next prime is 23240227. The reversal of 23240225 is 52204232.

It can be written as a sum of positive squares in 3 ways, for example, as 2845969 + 20394256 = 1687^2 + 4516^2 .

It is not a de Polignac number, because 23240225 - 2¹⁰ = 23239201 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 23240197 and 23240206.

It is not an unprimeable number, because it can be changed into a prime (23240227) 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, 464780 + ... + 464829.

It is an arithmetic number, because the mean of its divisors is an integer number (4802985).

Almost surely, 2^23240225 is an apocalyptic number.

23240225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23240225 is a deficient number, since it is larger than the sum of its proper divisors (5577685).

23240225 is an equidigital number, since it uses as much as digits as its factorization.

23240225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929619 (or 929614 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 23240225 is about 4820.8116536534. The cubic root of 23240225 is about 285.3733692706.

Adding to 23240225 its reverse (52204232), we get a palindrome (75444457).

The spelling of 23240225 in words is "twenty-three million, two hundred forty thousand, two hundred twenty-five".