825211 has 4 divisors (see below), whose sum is σ = 847552. Its totient is φ = 802872.

The previous prime is 825203. The next prime is 825229. The reversal of 825211 is 112528.

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

It is a cyclic number.

It is not a de Polignac number, because 825211 - 2³ = 825203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (825241) 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, 11115 + ... + 11188.

It is an arithmetic number, because the mean of its divisors is an integer number (211888).

2⁸²⁵²¹¹ is an apocalyptic number.

825211 is a deficient number, since it is larger than the sum of its proper divisors (22341).

825211 is a wasteful number, since it uses less digits than its factorization.

825211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22340.

The product of its digits is 160, while the sum is 19.

The square root of 825211 is about 908.4112504808. The cubic root of 825211 is about 93.7968678250.

Adding to 825211 its reverse (112528), we get a palindrome (937739).

The spelling of 825211 in words is "eight hundred twenty-five thousand, two hundred eleven".