28025005300500 has 192 divisors, whose sum is σ = 87892351852032. Its totient is φ = 6897996979200.

The previous prime is 28025005300489. The next prime is 28025005300511. The reversal of 28025005300500 is 500350052082.

It is an interprime number because it is at equal distance from previous prime (28025005300489) and next prime (28025005300511).

It is a Harshad number since it is a multiple of its sum of digits (30).

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 63 ways as a sum of consecutive naturals, for example, 355504089 + ... + 355582911.

It is an arithmetic number, because the mean of its divisors is an integer number (457772665896).

Almost surely, 2^{28025005300500} is an apocalyptic number.

28025005300500 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 28025005300500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43946175926016).

28025005300500 is an abundant number, since it is smaller than the sum of its proper divisors (59867346551532).

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

28025005300500 is a wasteful number, since it uses less digits than its factorization.

28025005300500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97091 (or 97079 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

Adding to 28025005300500 its reverse (500350052082), we get a palindrome (28525355352582).

The spelling of 28025005300500 in words is "twenty-eight trillion, twenty-five billion, five million, three hundred thousand, five hundred".