825090 has 32 divisors (see below), whose sum is σ = 2263680. Its totient is φ = 188544.

The previous prime is 825073. The next prime is 825101. The reversal of 825090 is 90528.

It is a self number, because there is not a number n which added to its sum of digits gives 825090.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1755 + ... + 2174.

It is an arithmetic number, because the mean of its divisors is an integer number (70740).

2⁸²⁵⁰⁹⁰ is an apocalyptic number.

825090 is an abundant number, since it is smaller than the sum of its proper divisors (1438590).

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

825090 is a wasteful number, since it uses less digits than its factorization.

825090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3946.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 825090 is about 908.3446482476. The cubic root of 825090 is about 93.7922831488.

The spelling of 825090 in words is "eight hundred twenty-five thousand, ninety".