3925633257 has 24 divisors (see below), whose sum is σ = 6978905024. Its totient is φ = 2070663264.

The previous prime is 3925633241. The next prime is 3925633259. The reversal of 3925633257 is 7523365293.

3925633257 is a `hidden beast` number, since 3 + 9 + 2 + 5 + 633 + 2 + 5 + 7 = 666.

It is not a de Polignac number, because 3925633257 - 2⁴ = 3925633241 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (3925633259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2395783 + ... + 2397420.

Almost surely, 2^3925633257 is an apocalyptic number.

It is an amenable number.

3925633257 is a deficient number, since it is larger than the sum of its proper divisors (3053271767).

3925633257 is a wasteful number, since it uses less digits than its factorization.

3925633257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4793229 (or 4793226 counting only the distinct ones).

The product of its digits is 1020600, while the sum is 45.

The square root of 3925633257 is about 62654.8741679368. The cubic root of 3925633257 is about 1577.5019620347.

The spelling of 3925633257 in words is "three billion, nine hundred twenty-five million, six hundred thirty-three thousand, two hundred fifty-seven".