825490 has 8 divisors (see below), whose sum is σ = 1485900. Its totient is φ = 330192.

The previous prime is 825479. The next prime is 825491. The reversal of 825490 is 94528.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 811801 + 13689 = 901^2 + 117^2 .

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

It is not an unprimeable number, because it can be changed into a prime (825491) 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, 41265 + ... + 41284.

2⁸²⁵⁴⁹⁰ is an apocalyptic number.

825490 is a deficient number, since it is larger than the sum of its proper divisors (660410).

825490 is a wasteful number, since it uses less digits than its factorization.

825490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82556.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 825490 is about 908.5648023119. The cubic root of 825490 is about 93.8074373955.

The spelling of 825490 in words is "eight hundred twenty-five thousand, four hundred ninety".