28028300808025 has 48 divisors (see below), whose sum is σ = 39963425677056. Its totient is φ = 19101702654720.

The previous prime is 28028300807951. The next prime is 28028300808029. The reversal of 28028300808025 is 52080800382082.

It is a happy number.

It is not a de Polignac number, because 28028300808025 - 2¹⁷ = 28028300676953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28028300808029) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 226636507 + ... + 226760143.

It is an arithmetic number, because the mean of its divisors is an integer number (832571368272).

Almost surely, 2^{28028300808025} is an apocalyptic number.

28028300808025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28028300808025 is a deficient number, since it is larger than the sum of its proper divisors (11935124869031).

28028300808025 is a wasteful number, since it uses less digits than its factorization.

28028300808025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131578 (or 131573 counting only the distinct ones).

The product of its (nonzero) digits is 491520, while the sum is 46.

The spelling of 28028300808025 in words is "twenty-eight trillion, twenty-eight billion, three hundred million, eight hundred eight thousand, twenty-five".