12025711671 has 4 divisors (see below), whose sum is σ = 16034282232. Its totient is φ = 8017141112.

The previous prime is 12025711637. The next prime is 12025711679. The reversal of 12025711671 is 17611752021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12025711671 is a prime.

It is a super-2 number, since 2×12025711671² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12025711679) 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, 2004285276 + ... + 2004285281.

It is an arithmetic number, because the mean of its divisors is an integer number (4008570558).

Almost surely, 2^12025711671 is an apocalyptic number.

12025711671 is a deficient number, since it is larger than the sum of its proper divisors (4008570561).

12025711671 is an equidigital number, since it uses as much as digits as its factorization.

12025711671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4008570560.

The product of its (nonzero) digits is 5880, while the sum is 33.

The spelling of 12025711671 in words is "twelve billion, twenty-five million, seven hundred eleven thousand, six hundred seventy-one".