3925165641 has 8 divisors (see below), whose sum is σ = 5252180064. Its totient is φ = 2607464160.

The previous prime is 3925165591. The next prime is 3925165663. The reversal of 3925165641 is 1465615293.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3925165641 - 2⁶ = 3925165577 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3925165593 and 3925165602.

It is not an unprimeable number, because it can be changed into a prime (3925165681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2327251 + ... + 2328936.

It is an arithmetic number, because the mean of its divisors is an integer number (656522508).

Almost surely, 2^3925165641 is an apocalyptic number.

It is an amenable number.

3925165641 is a deficient number, since it is larger than the sum of its proper divisors (1327014423).

3925165641 is a wasteful number, since it uses less digits than its factorization.

3925165641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4656471.

The product of its digits is 194400, while the sum is 42.

The square root of 3925165641 is about 62651.1423758578. The cubic root of 3925165641 is about 1577.4393229307.

The spelling of 3925165641 in words is "three billion, nine hundred twenty-five million, one hundred sixty-five thousand, six hundred forty-one".