12065422257 has 32 divisors (see below), whose sum is σ = 21629894400. Its totient is φ = 6488964864.

The previous prime is 12065422253. The next prime is 12065422289. The reversal of 12065422257 is 75222456021.

12065422257 is a `hidden beast` number, since 1 + 206 + 5 + 422 + 25 + 7 = 666.

It is not a de Polignac number, because 12065422257 - 2² = 12065422253 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12065422253) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1874382 + ... + 1880807.

It is an arithmetic number, because the mean of its divisors is an integer number (675934200).

Almost surely, 2^12065422257 is an apocalyptic number.

12065422257 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

12065422257 is a deficient number, since it is larger than the sum of its proper divisors (9564472143).

12065422257 is a wasteful number, since it uses less digits than its factorization.

12065422257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3755222 (or 3755216 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 36.

Adding to 12065422257 its reverse (75222456021), we get a palindrome (87287878278).

The spelling of 12065422257 in words is "twelve billion, sixty-five million, four hundred twenty-two thousand, two hundred fifty-seven".