25688519680 has 88 divisors (see below), whose sum is σ = 64301870592. Its totient is φ = 9828605952.

The previous prime is 25688519677. The next prime is 25688519719. The reversal of 25688519680 is 8691588652.

It is a congruent number.

It is an unprimeable number.

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, 8689 + ... + 226831.

Almost surely, 2^25688519680 is an apocalyptic number.

25688519680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25688519680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32150935296).

25688519680 is an abundant number, since it is smaller than the sum of its proper divisors (38613350912).

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

25688519680 is a wasteful number, since it uses less digits than its factorization.

25688519680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218191 (or 218173 counting only the distinct ones).

The product of its (nonzero) digits is 8294400, while the sum is 58.

The spelling of 25688519680 in words is "twenty-five billion, six hundred eighty-eight million, five hundred nineteen thousand, six hundred eighty".