825899859 has 12 divisors (see below), whose sum is σ = 1222063752. Its totient is φ = 537170400.

The previous prime is 825899857. The next prime is 825899897. The reversal of 825899859 is 958998528.

It is not a de Polignac number, because 825899859 - 2¹ = 825899857 is a prime.

It is a super-2 number, since 2×825899859² = 1364221154192439762, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 825899796 and 825899805.

It is not an unprimeable number, because it can be changed into a prime (825899857) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1118737 + ... + 1119474.

It is an arithmetic number, because the mean of its divisors is an integer number (101838646).

Almost surely, 2^825899859 is an apocalyptic number.

825899859 is a deficient number, since it is larger than the sum of its proper divisors (396163893).

825899859 is a wasteful number, since it uses less digits than its factorization.

825899859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2238258 (or 2238255 counting only the distinct ones).

The product of its digits is 18662400, while the sum is 63.

The square root of 825899859 is about 28738.4734980827. The cubic root of 825899859 is about 938.2296007942.

The spelling of 825899859 in words is "eight hundred twenty-five million, eight hundred ninety-nine thousand, eight hundred fifty-nine".