25971139104 has 24 divisors (see below), whose sum is σ = 68174240400. Its totient is φ = 8657046336.

The previous prime is 25971139093. The next prime is 25971139157. The reversal of 25971139104 is 40193117952.

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135266254 + ... + 135266445.

It is an arithmetic number, because the mean of its divisors is an integer number (2840593350).

Almost surely, 2^25971139104 is an apocalyptic number.

25971139104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

25971139104 is an abundant number, since it is smaller than the sum of its proper divisors (42203101296).

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

25971139104 is a wasteful number, since it uses less digits than its factorization.

25971139104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270532712 (or 270532704 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 42.

The spelling of 25971139104 in words is "twenty-five billion, nine hundred seventy-one million, one hundred thirty-nine thousand, one hundred four".