828100825 has 6 divisors (see below), whose sum is σ = 1026845054. Its totient is φ = 662480640.

The previous prime is 828100817. The next prime is 828100841. The reversal of 828100825 is 528001828.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 215296 + 827885529 = 464^2 + 28773^2 .

It is not a de Polignac number, because 828100825 - 2³ = 828100817 is a prime.

It is a Duffinian number.

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, 16561992 + ... + 16562041.

Almost surely, 2^828100825 is an apocalyptic number.

It is an amenable number.

828100825 is a deficient number, since it is larger than the sum of its proper divisors (198744229).

828100825 is a wasteful number, since it uses less digits than its factorization.

828100825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33124043 (or 33124038 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 34.

The square root of 828100825 is about 28776.7410420291. The cubic root of 828100825 is about 939.0623005335.

The spelling of 828100825 in words is "eight hundred twenty-eight million, one hundred thousand, eight hundred twenty-five".