173145325 has 6 divisors (see below), whose sum is σ = 214700234. Its totient is φ = 138516240.

The previous prime is 173145319. The next prime is 173145359. The reversal of 173145325 is 523541371.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 958441 + 172186884 = 979^2 + 13122^2 .

It is not a de Polignac number, because 173145325 - 2⁵ = 173145293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3462882 + ... + 3462931.

Almost surely, 2^173145325 is an apocalyptic number.

It is an amenable number.

173145325 is a deficient number, since it is larger than the sum of its proper divisors (41554909).

173145325 is an equidigital number, since it uses as much as digits as its factorization.

173145325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6925823 (or 6925818 counting only the distinct ones).

The product of its digits is 12600, while the sum is 31.

The square root of 173145325 is about 13158.4697058587. The cubic root of 173145325 is about 557.3614447851.

Adding to 173145325 its reverse (523541371), we get a palindrome (696686696).

The spelling of 173145325 in words is "one hundred seventy-three million, one hundred forty-five thousand, three hundred twenty-five".