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12000125 = 5396001
BaseRepresentation
bin101101110001…
…101101111101
3211120200002002
4231301231331
511033001000
61105112045
7203666534
oct55615575
924520062
1012000125
116856965
124028625
132642087
14184531b
1510c08d5
hexb71b7d

12000125 has 8 divisors (see below), whose sum is σ = 14976312. Its totient is φ = 9600000.

The previous prime is 12000097. The next prime is 12000127. The reversal of 12000125 is 52100021.

It can be written as a sum of positive squares in 4 ways, for example, as 2033476 + 9966649 = 1426^2 + 3157^2 .

It is not a de Polignac number, because 12000125 - 222 = 7805821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12000127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47876 + ... + 48125.

It is an arithmetic number, because the mean of its divisors is an integer number (1872039).

Almost surely, 212000125 is an apocalyptic number.

It is an amenable number.

12000125 is a deficient number, since it is larger than the sum of its proper divisors (2976187).

12000125 is an frugal number, since it uses more digits than its factorization.

12000125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96016 (or 96006 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 11.

The square root of 12000125 is about 3464.1196572867. The cubic root of 12000125 is about 228.9436434484.

Adding to 12000125 its reverse (52100021), we get a palindrome (64100146).

It can be divided in two parts, 120001 and 25, that multiplied together give a triangular number (3000025 = T2449).

The spelling of 12000125 in words is "twelve million, one hundred twenty-five", and thus it is an aban number.

Divisors: 1 5 25 125 96001 480005 2400025 12000125