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6812125 = 5354497
BaseRepresentation
bin11001111111000111011101
3110211002110221
4121333013131
53220442000
6402001341
7111621265
oct31770735
913732427
106812125
113933061
122346251
131546858
14c947a5
158e861a
hex67f1dd

6812125 has 8 divisors (see below), whose sum is σ = 8501688. Its totient is φ = 5449600.

The previous prime is 6812077. The next prime is 6812161. The reversal of 6812125 is 5212186.

It can be written as a sum of positive squares in 4 ways, for example, as 527076 + 6285049 = 726^2 + 2507^2 .

It is not a de Polignac number, because 6812125 - 27 = 6811997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6812125.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27124 + ... + 27373.

It is an arithmetic number, because the mean of its divisors is an integer number (1062711).

Almost surely, 26812125 is an apocalyptic number.

It is an amenable number.

6812125 is a deficient number, since it is larger than the sum of its proper divisors (1689563).

6812125 is an equidigital number, since it uses as much as digits as its factorization.

6812125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54512 (or 54502 counting only the distinct ones).

The product of its digits is 960, while the sum is 25.

The square root of 6812125 is about 2610.0047892676. The cubic root of 6812125 is about 189.5661847656.

Subtracting from 6812125 its sum of digits (25), we obtain a square (6812100 = 26102).

It can be divided in two parts, 68121 and 25, that multiplied together give a square (1703025 = 13052).

The spelling of 6812125 in words is "six million, eight hundred twelve thousand, one hundred twenty-five".

Divisors: 1 5 25 125 54497 272485 1362425 6812125