3865296825 has 144 divisors (see below), whose sum is σ = 7915951680. Its totient is φ = 1787235840.

The previous prime is 3865296821. The next prime is 3865296829. The reversal of 3865296825 is 5286925683.

3865296825 is a `hidden beast` number, since 38 + 6 + 529 + 6 + 82 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (3865296821) and next prime (3865296829).

It is not a de Polignac number, because 3865296825 - 2² = 3865296821 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

Its product of digits (6220800) is a multiple of the sum of its prime divisors (640).

It is not an unprimeable number, because it can be changed into a prime (3865296821) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 8725054 + ... + 8725496.

Almost surely, 2^3865296825 is an apocalyptic number.

It is an amenable number.

3865296825 is an abundant number, since it is smaller than the sum of its proper divisors (4050654855).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3865296825 is a wasteful number, since it uses less digits than its factorization.

3865296825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648 (or 640 counting only the distinct ones).

The product of its digits is 6220800, while the sum is 54.

The square root of 3865296825 is about 62171.5113617161. The cubic root of 3865296825 is about 1569.3782038773.

The spelling of 3865296825 in words is "three billion, eight hundred sixty-five million, two hundred ninety-six thousand, eight hundred twenty-five".