25580078876500 has 96 divisors (see below), whose sum is σ = 56001128077440. Its totient is φ = 10207457856000.

The previous prime is 25580078876497. The next prime is 25580078876593. The reversal of 25580078876500 is 567887008552.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1064981491 + ... + 1065005509.

It is an arithmetic number, because the mean of its divisors is an integer number (583345084140).

Almost surely, 2^{25580078876500} is an apocalyptic number.

25580078876500 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 25580078876500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28000564038720).

25580078876500 is an abundant number, since it is smaller than the sum of its proper divisors (30421049200940).

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

25580078876500 is a wasteful number, since it uses less digits than its factorization.

25580078876500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29066 (or 29054 counting only the distinct ones).

The product of its (nonzero) digits is 37632000, while the sum is 61.

The spelling of 25580078876500 in words is "twenty-five trillion, five hundred eighty billion, seventy-eight million, eight hundred seventy-six thousand, five hundred".