3878752997025 has 27 divisors (see below), whose sum is σ = 6947330503321. Its totient is φ = 2068652509440.

The previous prime is 3878752996991. The next prime is 3878752997047. The reversal of 3878752997025 is 5207992578783.

The square root of 3878752997025 is 1969455.

It is a perfect power (a square), and thus also a powerful number.

3878752997025 is a `hidden beast` number, since 3 + 8 + 7 + 8 + 7 + 529 + 9 + 70 + 25 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1186620241041 + 2692132755984 = 1089321^2 + 1640772^2 .

It is not a de Polignac number, because 3878752997025 - 2²⁵ = 3878719442593 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 29476177 + ... + 29607473.

Almost surely, 2^{3878752997025} is an apocalyptic number.

3878752997025 is the 1969455-th square number.

3878752997025 is the 984728-th centered octagonal number.

It is an amenable number.

3878752997025 is a deficient number, since it is larger than the sum of its proper divisors (3068577506296).

3878752997025 is an frugal number, since it uses more digits than its factorization.

3878752997025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262610 (or 131305 counting only the distinct ones).

The product of its (nonzero) digits is 533433600, while the sum is 72.

The spelling of 3878752997025 in words is "three trillion, eight hundred seventy-eight billion, seven hundred fifty-two million, nine hundred ninety-seven thousand, twenty-five".