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12425233 = 28974289
BaseRepresentation
bin101111011001…
…100000010001
3212101021012211
4233121200101
511140101413
61122152121
7210420112
oct57314021
925337184
1012425233
117017297
1241b2641
132760712
141916209
15115683d
hexbd9811

12425233 has 4 divisors (see below), whose sum is σ = 12432420. Its totient is φ = 12418048.

The previous prime is 12425227. The next prime is 12425239. The reversal of 12425233 is 33252421.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 33252421 = 52796299.

It is an interprime number because it is at equal distance from previous prime (12425227) and next prime (12425239).

It can be written as a sum of positive squares in 2 ways, for example, as 6822544 + 5602689 = 2612^2 + 2367^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12425233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12425239) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 753 + ... + 5041.

It is an arithmetic number, because the mean of its divisors is an integer number (3108105).

Almost surely, 212425233 is an apocalyptic number.

It is an amenable number.

12425233 is a deficient number, since it is larger than the sum of its proper divisors (7187).

12425233 is an equidigital number, since it uses as much as digits as its factorization.

12425233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7186.

The product of its digits is 1440, while the sum is 22.

The square root of 12425233 is about 3524.9443967246. The cubic root of 12425233 is about 231.6157991475.

Adding to 12425233 its reverse (33252421), we get a palindrome (45677654).

The spelling of 12425233 in words is "twelve million, four hundred twenty-five thousand, two hundred thirty-three".

Divisors: 1 2897 4289 12425233