25881136870 has 16 divisors (see below), whose sum is σ = 46590168240. Its totient is φ = 10351538784.

The previous prime is 25881136847. The next prime is 25881136871. The reversal of 25881136870 is 7863118852.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25881136871) 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, 10696 + ... + 227764.

It is an arithmetic number, because the mean of its divisors is an integer number (2911885515).

Almost surely, 2^25881136870 is an apocalyptic number.

25881136870 is a deficient number, since it is larger than the sum of its proper divisors (20709031370).

25881136870 is a wasteful number, since it uses less digits than its factorization.

25881136870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228999.

The product of its (nonzero) digits is 645120, while the sum is 49.

The spelling of 25881136870 in words is "twenty-five billion, eight hundred eighty-one million, one hundred thirty-six thousand, eight hundred seventy".