28003025005 has 8 divisors (see below), whose sum is σ = 35580314232. Its totient is φ = 21084630528.

The previous prime is 28003025003. The next prime is 28003025041. The reversal of 28003025005 is 50052030082.

It can be written as a sum of positive squares in 4 ways, for example, as 8886644361 + 19116380644 = 94269^2 + 138262^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28003025005 - 2¹ = 28003025003 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28003025003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 164723592 + ... + 164723761.

It is an arithmetic number, because the mean of its divisors is an integer number (4447539279).

Almost surely, 2^28003025005 is an apocalyptic number.

It is an amenable number.

28003025005 is a deficient number, since it is larger than the sum of its proper divisors (7577289227).

28003025005 is a wasteful number, since it uses less digits than its factorization.

28003025005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329447375.

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 28003025005 its reverse (50052030082), we get a palindrome (78055055087).

The spelling of 28003025005 in words is "twenty-eight billion, three million, twenty-five thousand, five".