28255525000 has 96 divisors (see below), whose sum is σ = 66833613000. Its totient is φ = 11197440000.

The previous prime is 28255524991. The next prime is 28255525007. The reversal of 28255525000 is 52555282.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 17900834436 + 10354690564 = 133794^2 + 101758^2 .

It is not an unprimeable number, because it can be changed into a prime (28255525007) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2719816 + ... + 2730184.

Almost surely, 2^28255525000 is an apocalyptic number.

28255525000 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 28255525000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33416806500).

28255525000 is an abundant number, since it is smaller than the sum of its proper divisors (38578088000).

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

28255525000 is a wasteful number, since it uses less digits than its factorization.

28255525000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10509 (or 10485 counting only the distinct ones).

The product of its (nonzero) digits is 40000, while the sum is 34.

The spelling of 28255525000 in words is "twenty-eight billion, two hundred fifty-five million, five hundred twenty-five thousand".