825918 has 8 divisors (see below), whose sum is σ = 1651848. Its totient is φ = 275304.

The previous prime is 825889. The next prime is 825919. The reversal of 825918 is 819528.

It is a happy number.

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

825918 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (825919) by changing a digit.

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, 68821 + ... + 68832.

It is an arithmetic number, because the mean of its divisors is an integer number (206481).

2⁸²⁵⁹¹⁸ is an apocalyptic number.

825918 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

825918 is a wasteful number, since it uses less digits than its factorization.

825918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137658.

The product of its digits is 5760, while the sum is 33.

The square root of 825918 is about 908.8003080985. The cubic root of 825918 is about 93.8236470190.

The spelling of 825918 in words is "eight hundred twenty-five thousand, nine hundred eighteen".