25912116887 has 8 divisors (see below), whose sum is σ = 26239123680. Its totient is φ = 25586733600.

The previous prime is 25912116877. The next prime is 25912116911. The reversal of 25912116887 is 78861121952.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25912116887 - 2⁶ = 25912116823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25912116877) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 373739 + ... + 437612.

It is an arithmetic number, because the mean of its divisors is an integer number (3279890460).

Almost surely, 2^25912116887 is an apocalyptic number.

25912116887 is a deficient number, since it is larger than the sum of its proper divisors (327006793).

25912116887 is a wasteful number, since it uses less digits than its factorization.

25912116887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 811753.

The product of its digits is 483840, while the sum is 50.

The spelling of 25912116887 in words is "twenty-five billion, nine hundred twelve million, one hundred sixteen thousand, eight hundred eighty-seven".