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825829 is a prime number
BaseRepresentation
bin11001001100111100101
31112221211021
43021213211
5202411304
625411141
710006444
oct3114745
91487737
10825829
11514504
12339ab1
1322bb74
14176d5b
15114a54
hexc99e5

825829 has 2 divisors, whose sum is σ = 825830. Its totient is φ = 825828.

The previous prime is 825827. The next prime is 825857. The reversal of 825829 is 928528.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 664225 + 161604 = 815^2 + 402^2 .

It is a cyclic number.

It is not a de Polignac number, because 825829 - 21 = 825827 is a prime.

Together with 825827, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 825794 and 825803.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (825821) 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 as a sum of consecutive naturals, namely, 412914 + 412915.

It is an arithmetic number, because the mean of its divisors is an integer number (412915).

2825829 is an apocalyptic number.

It is an amenable number.

825829 is a deficient number, since it is larger than the sum of its proper divisors (1).

825829 is an equidigital number, since it uses as much as digits as its factorization.

825829 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11520, while the sum is 34.

The square root of 825829 is about 908.7513411269. The cubic root of 825829 is about 93.8202767875.

The spelling of 825829 in words is "eight hundred twenty-five thousand, eight hundred twenty-nine".