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12750125 = 53102001
BaseRepresentation
bin110000101000…
…110100101101
3212222202212212
4300220310231
511231001000
61133140205
7213242243
oct60506455
925882785
1012750125
1172193a3
12432a665
13284556b
14199c793
1511bcc35
hexc28d2d

12750125 has 8 divisors (see below), whose sum is σ = 15912312. Its totient is φ = 10200000.

The previous prime is 12750103. The next prime is 12750149. The reversal of 12750125 is 52105721.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2896804 + 9853321 = 1702^2 + 3139^2 .

It is not a de Polignac number, because 12750125 - 210 = 12749101 is a prime.

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 12750125.

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 7 ways as a sum of consecutive naturals, for example, 50876 + ... + 51125.

It is an arithmetic number, because the mean of its divisors is an integer number (1989039).

Almost surely, 212750125 is an apocalyptic number.

It is an amenable number.

12750125 is a deficient number, since it is larger than the sum of its proper divisors (3162187).

12750125 is an equidigital number, since it uses as much as digits as its factorization.

12750125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102016 (or 102006 counting only the distinct ones).

The product of its (nonzero) digits is 700, while the sum is 23.

The square root of 12750125 is about 3570.7317177296. The cubic root of 12750125 is about 233.6171998677.

Adding to 12750125 its reverse (52105721), we get a palindrome (64855846).

The spelling of 12750125 in words is "twelve million, seven hundred fifty thousand, one hundred twenty-five".

Divisors: 1 5 25 125 102001 510005 2550025 12750125