23643325 has 6 divisors (see below), whose sum is σ = 29317754. Its totient is φ = 18914640.

The previous prime is 23643289. The next prime is 23643331. The reversal of 23643325 is 52334632.

It can be written as a sum of positive squares in 3 ways, for example, as 343396 + 23299929 = 586^2 + 4827^2 .

It is not a de Polignac number, because 23643325 - 2⁷ = 23643197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23643293 and 23643302.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 472842 + ... + 472891.

Almost surely, 2^23643325 is an apocalyptic number.

23643325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23643325 is a deficient number, since it is larger than the sum of its proper divisors (5674429).

23643325 is an equidigital number, since it uses as much as digits as its factorization.

23643325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 945743 (or 945738 counting only the distinct ones).

The product of its digits is 12960, while the sum is 28.

The square root of 23643325 is about 4862.4402309951. The cubic root of 23643325 is about 287.0138475838.

Adding to 23643325 its reverse (52334632), we get a palindrome (75977957).

The spelling of 23643325 in words is "twenty-three million, six hundred forty-three thousand, three hundred twenty-five".