3925905941181 has 16 divisors (see below), whose sum is σ = 6121456884224. Its totient is φ = 2191203315504.

The previous prime is 3925905941141. The next prime is 3925905941197. The reversal of 3925905941181 is 1811495095293.

It is not a de Polignac number, because 3925905941181 - 2⁹ = 3925905940669 is a prime.

It is a super-2 number, since 2×3925905941181² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3925905941141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2173811911 + ... + 2173813716.

It is an arithmetic number, because the mean of its divisors is an integer number (382591055264).

Almost surely, 2^{3925905941181} is an apocalyptic number.

It is an amenable number.

3925905941181 is a deficient number, since it is larger than the sum of its proper divisors (2195550943043).

3925905941181 is a wasteful number, since it uses less digits than its factorization.

3925905941181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4347625680.

The product of its (nonzero) digits is 3499200, while the sum is 57.

The spelling of 3925905941181 in words is "three trillion, nine hundred twenty-five billion, nine hundred five million, nine hundred forty-one thousand, one hundred eighty-one".