3878866025 has 12 divisors (see below), whose sum is σ = 4822496400. Its totient is φ = 3094897680.

The previous prime is 3878865989. The next prime is 3878866031. The reversal of 3878866025 is 5206688783.

It is not a de Polignac number, because 3878866025 - 2⁸ = 3878865769 is a prime.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 195215 + ... + 214164.

It is an arithmetic number, because the mean of its divisors is an integer number (401874700).

Almost surely, 2^3878866025 is an apocalyptic number.

It is an amenable number.

3878866025 is a deficient number, since it is larger than the sum of its proper divisors (943630375).

3878866025 is a wasteful number, since it uses less digits than its factorization.

3878866025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409768 (or 409763 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 53.

The square root of 3878866025 is about 62280.5429086806. The cubic root of 3878866025 is about 1571.2125033798.

The spelling of 3878866025 in words is "three billion, eight hundred seventy-eight million, eight hundred sixty-six thousand, twenty-five".