23404225 has 48 divisors (see below), whose sum is σ = 33997824. Its totient is φ = 15840000.

The previous prime is 23404211. The next prime is 23404229. The reversal of 23404225 is 52240432.

It is not a de Polignac number, because 23404225 - 2⁵ = 23404193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23404196 and 23404205.

It is not an unprimeable number, because it can be changed into a prime (23404229) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 231675 + ... + 231775.

It is an arithmetic number, because the mean of its divisors is an integer number (708288).

Almost surely, 2^23404225 is an apocalyptic number.

23404225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23404225 is a deficient number, since it is larger than the sum of its proper divisors (10593599).

23404225 is a wasteful number, since it uses less digits than its factorization.

23404225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178 (or 173 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 23404225 is about 4837.7913348965. The cubic root of 23404225 is about 286.0430640812.

Adding to 23404225 its reverse (52240432), we get a palindrome (75644657).

The spelling of 23404225 in words is "twenty-three million, four hundred four thousand, two hundred twenty-five".