172859125 has 16 divisors (see below), whose sum is σ = 216253440. Its totient is φ = 137950800.

The previous prime is 172859039. The next prime is 172859143. The reversal of 172859125 is 521958271.

It is a de Polignac number, because none of the positive numbers 2^k-172859125 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 58432 + ... + 61318.

It is an arithmetic number, because the mean of its divisors is an integer number (13515840).

Almost surely, 2^172859125 is an apocalyptic number.

It is an amenable number.

172859125 is a deficient number, since it is larger than the sum of its proper divisors (43394315).

172859125 is an equidigital number, since it uses as much as digits as its factorization.

172859125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3381 (or 3371 counting only the distinct ones).

The product of its digits is 50400, while the sum is 40.

The square root of 172859125 is about 13147.5900833575. The cubic root of 172859125 is about 557.0541791645.

The spelling of 172859125 in words is "one hundred seventy-two million, eight hundred fifty-nine thousand, one hundred twenty-five".