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12825289 = 31413719
BaseRepresentation
bin110000111011…
…001011001001
3220010120222201
4300323023021
511240402124
61134520201
7214004341
oct60731311
926116881
1012825289
11726a914
124366061
132870839
1419bbd21
1511d5144
hexc3b2c9

12825289 has 4 divisors (see below), whose sum is σ = 13239040. Its totient is φ = 12411540.

The previous prime is 12825287. The next prime is 12825317. The reversal of 12825289 is 98252821.

12825289 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 98252821 = 130175521.

It is a cyclic number.

It is not a de Polignac number, because 12825289 - 21 = 12825287 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12825287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 206829 + ... + 206890.

It is an arithmetic number, because the mean of its divisors is an integer number (3309760).

Almost surely, 212825289 is an apocalyptic number.

It is an amenable number.

12825289 is a deficient number, since it is larger than the sum of its proper divisors (413751).

12825289 is an equidigital number, since it uses as much as digits as its factorization.

12825289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413750.

The product of its digits is 23040, while the sum is 37.

The square root of 12825289 is about 3581.2412652599. The cubic root of 12825289 is about 234.0753708067.

The spelling of 12825289 in words is "twelve million, eight hundred twenty-five thousand, two hundred eighty-nine".

Divisors: 1 31 413719 12825289