25863888378 has 32 divisors (see below), whose sum is σ = 54737068032. Its totient is φ = 8130306800.

The previous prime is 25863888371. The next prime is 25863888389. The reversal of 25863888378 is 87388836852.

25863888378 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (25863888371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1310058 + ... + 1329653.

It is an arithmetic number, because the mean of its divisors is an integer number (1710533376).

Almost surely, 2^25863888378 is an apocalyptic number.

25863888378 is an abundant number, since it is smaller than the sum of its proper divisors (28873179654).

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

25863888378 is a wasteful number, since it uses less digits than its factorization.

25863888378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2639810.

The product of its digits is 123863040, while the sum is 66.

The spelling of 25863888378 in words is "twenty-five billion, eight hundred sixty-three million, eight hundred eighty-eight thousand, three hundred seventy-eight".