217325 has 6 divisors (see below), whose sum is σ = 269514. Its totient is φ = 173840.

The previous prime is 217319. The next prime is 217333. The reversal of 217325 is 523712.

It can be written as a sum of positive squares in 3 ways, for example, as 169 + 217156 = 13^2 + 466^2 .

It is not a de Polignac number, because 217325 - 2⁴ = 217309 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 217297 and 217306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4322 + ... + 4371.

It is an arithmetic number, because the mean of its divisors is an integer number (44919).

2²¹⁷³²⁵ is an apocalyptic number.

217325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

217325 is a deficient number, since it is larger than the sum of its proper divisors (52189).

217325 is an equidigital number, since it uses as much as digits as its factorization.

217325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8703 (or 8698 counting only the distinct ones).

The product of its digits is 420, while the sum is 20.

The square root of 217325 is about 466.1812952061. The cubic root of 217325 is about 60.1224351757.

The spelling of 217325 in words is "two hundred seventeen thousand, three hundred twenty-five".