3925705886671 has 2 divisors, whose sum is σ = 3925705886672. Its totient is φ = 3925705886670.

The previous prime is 3925705886647. The next prime is 3925705886701. The reversal of 3925705886671 is 1766885075293.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3925705886671 - 2²⁹ = 3925169015759 is a prime.

It is a super-2 number, since 2×3925705886671² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3925705886597 and 3925705886606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3925705886171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1962852943335 + 1962852943336.

It is an arithmetic number, because the mean of its divisors is an integer number (1962852943336).

Almost surely, 2^{3925705886671} is an apocalyptic number.

3925705886671 is a deficient number, since it is larger than the sum of its proper divisors (1).

3925705886671 is an equidigital number, since it uses as much as digits as its factorization.

3925705886671 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 152409600, while the sum is 67.

The spelling of 3925705886671 in words is "three trillion, nine hundred twenty-five billion, seven hundred five million, eight hundred eighty-six thousand, six hundred seventy-one".