12325301666 has 4 divisors (see below), whose sum is σ = 18487952502. Its totient is φ = 6162650832.

The previous prime is 12325301647. The next prime is 12325301707. The reversal of 12325301666 is 66610352321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66610352321 = 67 ⋅994184363.

It can be written as a sum of positive squares in only one way, i.e., 9144905641 + 3180396025 = 95629^2 + 56395^2 .

It is a super-2 number, since 2×12325301666² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3081325415 + ... + 3081325418.

Almost surely, 2^12325301666 is an apocalyptic number.

12325301666 is a deficient number, since it is larger than the sum of its proper divisors (6162650836).

12325301666 is an equidigital number, since it uses as much as digits as its factorization.

12325301666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6162650835.

The product of its (nonzero) digits is 38880, while the sum is 35.

Adding to 12325301666 its reverse (66610352321), we get a palindrome (78935653987).

The spelling of 12325301666 in words is "twelve billion, three hundred twenty-five million, three hundred one thousand, six hundred sixty-six".