217325125 has 16 divisors (see below), whose sum is σ = 274502592. Its totient is φ = 171757200.

The previous prime is 217325117. The next prime is 217325177. The reversal of 217325125 is 521523712.

217325125 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 217325125 - 2³ = 217325117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 217325093 and 217325102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99 + ... + 20848.

It is an arithmetic number, because the mean of its divisors is an integer number (17156412).

Almost surely, 2^217325125 is an apocalyptic number.

217325125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

217325125 is a deficient number, since it is larger than the sum of its proper divisors (57177467).

217325125 is an equidigital number, since it uses as much as digits as its factorization.

217325125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21045 (or 21035 counting only the distinct ones).

The product of its digits is 4200, while the sum is 28.

The square root of 217325125 is about 14741.9511937871. The cubic root of 217325125 is about 601.2244670269.

Adding to 217325125 its reverse (521523712), we get a palindrome (738848837).

The spelling of 217325125 in words is "two hundred seventeen million, three hundred twenty-five thousand, one hundred twenty-five".