23173225 has 12 divisors (see below), whose sum is σ = 28932300. Its totient is φ = 18411200.

The previous prime is 23173181. The next prime is 23173231. The reversal of 23173225 is 52237132.

It can be written as a sum of positive squares in 6 ways, for example, as 8573184 + 14600041 = 2928^2 + 3821^2 .

It is not a de Polignac number, because 23173225 - 2¹¹ = 23171177 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 23173225.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 615 + ... + 6835.

It is an arithmetic number, because the mean of its divisors is an integer number (2411025).

Almost surely, 2^23173225 is an apocalyptic number.

23173225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23173225 is a deficient number, since it is larger than the sum of its proper divisors (5759075).

23173225 is a wasteful number, since it uses less digits than its factorization.

23173225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6380 (or 6375 counting only the distinct ones).

The product of its digits is 2520, while the sum is 25.

The square root of 23173225 is about 4813.8576007190. The cubic root of 23173225 is about 285.0988679246.

The spelling of 23173225 in words is "twenty-three million, one hundred seventy-three thousand, two hundred twenty-five".