78886855204425 has 18 divisors (see below), whose sum is σ = 141295122877662. Its totient is φ = 42072989442240.

The previous prime is 78886855204337. The next prime is 78886855204459. The reversal of 78886855204425 is 52440255868887.

78886855204425 is a `hidden beast` number, since 7 + 8 + 8 + 8 + 6 + 8 + 552 + 0 + 44 + 25 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 15740008847424 + 63146846357001 = 3967368^2 + 7946499^2 .

It is not a de Polignac number, because 78886855204425 - 2³⁶ = 78818135727689 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 175304122452 + ... + 175304122901.

It is an arithmetic number, because the mean of its divisors is an integer number (7849729048759).

Almost surely, 2^{78886855204425} is an apocalyptic number.

78886855204425 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

78886855204425 is a deficient number, since it is larger than the sum of its proper divisors (62408267673237).

78886855204425 is a wasteful number, since it uses less digits than its factorization.

78886855204425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350608245369 (or 350608245361 counting only the distinct ones).

The product of its (nonzero) digits is 1376256000, while the sum is 72.

The spelling of 78886855204425 in words is "seventy-eight trillion, eight hundred eighty-six billion, eight hundred fifty-five million, two hundred four thousand, four hundred twenty-five".