842825 has 6 divisors (see below), whose sum is σ = 1045134. Its totient is φ = 674240.

The previous prime is 842819. The next prime is 842857. The reversal of 842825 is 528248.

842825 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 1936 + 840889 = 44^2 + 917^2 .

It is not a de Polignac number, because 842825 - 2¹⁰ = 841801 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 842825.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16832 + ... + 16881.

It is an arithmetic number, because the mean of its divisors is an integer number (174189).

2⁸⁴²⁸²⁵ is an apocalyptic number.

It is an amenable number.

842825 is a deficient number, since it is larger than the sum of its proper divisors (202309).

842825 is a wasteful number, since it uses less digits than its factorization.

842825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33723 (or 33718 counting only the distinct ones).

The product of its digits is 5120, while the sum is 29.

The square root of 842825 is about 918.0550092451. The cubic root of 842825 is about 94.4595349461.

The spelling of 842825 in words is "eight hundred forty-two thousand, eight hundred twenty-five".