825790 has 32 divisors (see below), whose sum is σ = 1741824. Its totient is φ = 276000.

The previous prime is 825779. The next prime is 825791. The reversal of 825790 is 97528.

It is an Ulam number.

It is a zygodrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (825791) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3165 + ... + 3415.

It is an arithmetic number, because the mean of its divisors is an integer number (54432).

2⁸²⁵⁷⁹⁰ is an apocalyptic number.

825790 is an abundant number, since it is smaller than the sum of its proper divisors (916034).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

825790 is a wasteful number, since it uses less digits than its factorization.

825790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 825790 is about 908.7298828585. The cubic root of 825790 is about 93.8187998682.

The spelling of 825790 in words is "eight hundred twenty-five thousand, seven hundred ninety".