825143 has 4 divisors (see below), whose sum is σ = 900168. Its totient is φ = 750120.

The previous prime is 825131. The next prime is 825161. The reversal of 825143 is 341528.

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-825143 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 (825193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37496 + ... + 37517.

It is an arithmetic number, because the mean of its divisors is an integer number (225042).

2⁸²⁵¹⁴³ is an apocalyptic number.

825143 is a deficient number, since it is larger than the sum of its proper divisors (75025).

825143 is a wasteful number, since it uses less digits than its factorization.

825143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75024.

The product of its digits is 960, while the sum is 23.

The square root of 825143 is about 908.3738217276. The cubic root of 825143 is about 93.7942913679.

It can be divided in two parts, 82 and 5143, that added together give a palindrome (5225).

The spelling of 825143 in words is "eight hundred twenty-five thousand, one hundred forty-three".