825442 has 8 divisors (see below), whose sum is σ = 1250496. Its totient is φ = 408612.

The previous prime is 825439. The next prime is 825443. The reversal of 825442 is 244528.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (825443) 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, 1798 + ... + 2209.

It is an arithmetic number, because the mean of its divisors is an integer number (156312).

2⁸²⁵⁴⁴² is an apocalyptic number.

825442 is a deficient number, since it is larger than the sum of its proper divisors (425054).

825442 is a wasteful number, since it uses less digits than its factorization.

825442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4112.

The product of its digits is 2560, while the sum is 25.

The square root of 825442 is about 908.5383866409. The cubic root of 825442 is about 93.8056191444.

The spelling of 825442 in words is "eight hundred twenty-five thousand, four hundred forty-two".