23172325 has 12 divisors (see below), whose sum is σ = 31346208. Its totient is φ = 16852400.

The previous prime is 23172319. The next prime is 23172349. The reversal of 23172325 is 52327132.

It is a de Polignac number, because none of the positive numbers 2^k-23172325 is a prime.

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

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23172325.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41857 + ... + 42406.

It is an arithmetic number, because the mean of its divisors is an integer number (2612184).

Almost surely, 2^23172325 is an apocalyptic number.

23172325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23172325 is a deficient number, since it is larger than the sum of its proper divisors (8173883).

23172325 is a wasteful number, since it uses less digits than its factorization.

23172325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84284 (or 84279 counting only the distinct ones).

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

The square root of 23172325 is about 4813.7641196885. The cubic root of 23172325 is about 285.0951769939.

Adding to 23172325 its reverse (52327132), we get a palindrome (75499457).

The spelling of 23172325 in words is "twenty-three million, one hundred seventy-two thousand, three hundred twenty-five".