825290 has 8 divisors (see below), whose sum is σ = 1485540. Its totient is φ = 330112.

The previous prime is 825287. The next prime is 825301. The reversal of 825290 is 92528.

It can be written as a sum of positive squares in 2 ways, for example, as 790321 + 34969 = 889^2 + 187^2 .

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

It is a super-2 number, since 2×825290² = 1362207168200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41255 + ... + 41274.

2⁸²⁵²⁹⁰ is an apocalyptic number.

825290 is a deficient number, since it is larger than the sum of its proper divisors (660250).

825290 is a wasteful number, since it uses less digits than its factorization.

825290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82536.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 825290 is about 908.4547319487. The cubic root of 825290 is about 93.7998608842.

The spelling of 825290 in words is "eight hundred twenty-five thousand, two hundred ninety".