3951640825 has 24 divisors (see below), whose sum is σ = 5350773600. Its totient is φ = 2871081600.

The previous prime is 3951640801. The next prime is 3951640841. The reversal of 3951640825 is 5280461593.

3951640825 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3951640825 - 2⁵ = 3951640793 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 295126 + ... + 308224.

It is an arithmetic number, because the mean of its divisors is an integer number (222948900).

Almost surely, 2^3951640825 is an apocalyptic number.

It is an amenable number.

3951640825 is a deficient number, since it is larger than the sum of its proper divisors (1399132775).

3951640825 is a wasteful number, since it uses less digits than its factorization.

3951640825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14217 (or 14212 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 43.

The square root of 3951640825 is about 62862.0777973493. The cubic root of 3951640825 is about 1580.9779803601.

The spelling of 3951640825 in words is "three billion, nine hundred fifty-one million, six hundred forty thousand, eight hundred twenty-five".