25885874871 has 12 divisors (see below), whose sum is σ = 37471471648. Its totient is φ = 17219974464.

The previous prime is 25885874869. The next prime is 25885874921. The reversal of 25885874871 is 17847858852.

25885874871 is a `hidden beast` number, since 2 + 5 + 8 + 8 + 587 + 48 + 7 + 1 = 666.

It is not a de Polignac number, because 25885874871 - 2¹ = 25885874869 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25885874799 and 25885874808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25885874471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3101890 + ... + 3110223.

Almost surely, 2^25885874871 is an apocalyptic number.

25885874871 is a deficient number, since it is larger than the sum of its proper divisors (11585596777).

25885874871 is a wasteful number, since it uses less digits than its factorization.

25885874871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6212582 (or 6212579 counting only the distinct ones).

The product of its digits is 40140800, while the sum is 63.

The spelling of 25885874871 in words is "twenty-five billion, eight hundred eighty-five million, eight hundred seventy-four thousand, eight hundred seventy-one".