23407225 has 12 divisors (see below), whose sum is σ = 29502700. Its totient is φ = 18417600.

The previous prime is 23407217. The next prime is 23407253. The reversal of 23407225 is 52270432.

It can be written as a sum of positive squares in 6 ways, for example, as 5968249 + 17438976 = 2443^2 + 4176^2 .

It is not a de Polignac number, because 23407225 - 2³ = 23407217 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 23407225.

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 11 ways as a sum of consecutive naturals, for example, 6150 + ... + 9199.

Almost surely, 2^23407225 is an apocalyptic number.

23407225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23407225 is a deficient number, since it is larger than the sum of its proper divisors (6095475).

23407225 is a wasteful number, since it uses less digits than its factorization.

23407225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15420 (or 15415 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 25.

The square root of 23407225 is about 4838.1013838075. The cubic root of 23407225 is about 286.0552854148.

Adding to 23407225 its reverse (52270432), we get a palindrome (75677657).

It can be divided in two parts, 23407 and 225, that added together give a palindrome (23632).

The spelling of 23407225 in words is "twenty-three million, four hundred seven thousand, two hundred twenty-five".