825271 has 4 divisors (see below), whose sum is σ = 833544. Its totient is φ = 817000.

The previous prime is 825259. The next prime is 825277. The reversal of 825271 is 172528.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-825271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (825277) 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 3 ways as a sum of consecutive naturals, for example, 3985 + ... + 4186.

It is an arithmetic number, because the mean of its divisors is an integer number (208386).

2⁸²⁵²⁷¹ is an apocalyptic number.

825271 is a deficient number, since it is larger than the sum of its proper divisors (8273).

825271 is a wasteful number, since it uses less digits than its factorization.

825271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8272.

The product of its digits is 1120, while the sum is 25.

The square root of 825271 is about 908.4442745705. Note that the first 3 decimals coincide. The cubic root of 825271 is about 93.7991410520.

Adding to 825271 its reverse (172528), we get a palindrome (997799).

It can be divided in two parts, 82527 and 1, that added together give a palindrome (82528).

The spelling of 825271 in words is "eight hundred twenty-five thousand, two hundred seventy-one".