3971492925 has 24 divisors (see below), whose sum is σ = 6778018560. Its totient is φ = 2049801600.

The previous prime is 3971492891. The next prime is 3971492929. The reversal of 3971492925 is 5292941793.

It is not a de Polignac number, because 3971492925 - 2²⁰ = 3970444349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3971492929) 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 23 ways as a sum of consecutive naturals, for example, 851760 + ... + 856409.

It is an arithmetic number, because the mean of its divisors is an integer number (282417440).

Almost surely, 2^3971492925 is an apocalyptic number.

It is an amenable number.

3971492925 is a deficient number, since it is larger than the sum of its proper divisors (2806525635).

3971492925 is a wasteful number, since it uses less digits than its factorization.

3971492925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1708213 (or 1708208 counting only the distinct ones).

The product of its digits is 1224720, while the sum is 51.

The square root of 3971492925 is about 63019.7820132695. The cubic root of 3971492925 is about 1583.6210445459.

The spelling of 3971492925 in words is "three billion, nine hundred seventy-one million, four hundred ninety-two thousand, nine hundred twenty-five".