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800825 = 52103311
BaseRepresentation
bin11000011100000111001
31111200112012
43003200321
5201111300
625055305
76543524
oct3034071
91450465
10800825
114a7743
12327535
1322067c
1416bbbb
1510c435
hexc3839

800825 has 12 divisors (see below), whose sum is σ = 1005888. Its totient is φ = 632400.

The previous prime is 800801. The next prime is 800861. The reversal of 800825 is 528008.

It is not a de Polignac number, because 800825 - 210 = 799801 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 800825.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2420 + ... + 2730.

It is an arithmetic number, because the mean of its divisors is an integer number (83824).

2800825 is an apocalyptic number.

It is an amenable number.

800825 is a deficient number, since it is larger than the sum of its proper divisors (205063).

800825 is a wasteful number, since it uses less digits than its factorization.

800825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424 (or 419 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 800825 is about 894.8882611812. Note that the first 3 decimals coincide. The cubic root of 800825 is about 92.8636766324.

The spelling of 800825 in words is "eight hundred thousand, eight hundred twenty-five".

Divisors: 1 5 25 103 311 515 1555 2575 7775 32033 160165 800825