25530800000 has 192 divisors, whose sum is σ = 64423220400. Its totient is φ = 10076160000.

The previous prime is 25530799997. The next prime is 25530800011. The reversal of 25530800000 is 803552.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33199616 + ... + 33200384.

Almost surely, 2^25530800000 is an apocalyptic number.

25530800000 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 25530800000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32211610200).

25530800000 is an abundant number, since it is smaller than the sum of its proper divisors (38892420400).

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

25530800000 is an frugal number, since it uses more digits than its factorization.

25530800000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 891 (or 859 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The spelling of 25530800000 in words is "twenty-five billion, five hundred thirty million, eight hundred thousand".