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2660125 = 53131637
BaseRepresentation
bin1010001001011100011101
312000011000011
422021130131
51140111000
6133003221
731416316
oct12113435
95004004
102660125
111557656
12a83511
13721a50
144d360d
153782ba
hex28971d

2660125 has 16 divisors (see below), whose sum is σ = 3577392. Its totient is φ = 1963200.

The previous prime is 2660117. The next prime is 2660131. The reversal of 2660125 is 5210662.

2660125 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 2125764 + 534361 = 1458^2 + 731^2 .

It is not a de Polignac number, because 2660125 - 23 = 2660117 is a prime.

2660125 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2660096 and 2660105.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 807 + ... + 2443.

It is an arithmetic number, because the mean of its divisors is an integer number (223587).

22660125 is an apocalyptic number.

2660125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2660125 is a deficient number, since it is larger than the sum of its proper divisors (917267).

2660125 is a wasteful number, since it uses less digits than its factorization.

2660125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1665 (or 1655 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 2660125 is about 1630.9889637885. The cubic root of 2660125 is about 138.5587685624.

Adding to 2660125 its reverse (5210662), we get a palindrome (7870787).

The spelling of 2660125 in words is "two million, six hundred sixty thousand, one hundred twenty-five".

Divisors: 1 5 13 25 65 125 325 1625 1637 8185 21281 40925 106405 204625 532025 2660125