173225500 has 96 divisors (see below), whose sum is σ = 442810368. Its totient is φ = 57960000.

The previous prime is 173225491. The next prime is 173225501. The reversal of 173225500 is 5522371.

173225500 is digitally balanced in base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

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

173225500 is strictly pandigital in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (173225501) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 149925 + ... + 151075.

It is an arithmetic number, because the mean of its divisors is an integer number (4612608).

Almost surely, 2^173225500 is an apocalyptic number.

173225500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 173225500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (221405184).

173225500 is an abundant number, since it is smaller than the sum of its proper divisors (269584868).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

173225500 is a wasteful number, since it uses less digits than its factorization.

173225500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1220 (or 1208 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 173225500 is about 13161.5158701420. The cubic root of 173225500 is about 557.4474603104.

Adding to 173225500 its reverse (5522371), we get a palindrome (178747871).

It can be divided in two parts, 17322 and 5500, that added together give a palindrome (22822).

The spelling of 173225500 in words is "one hundred seventy-three million, two hundred twenty-five thousand, five hundred".