28003030278025 has 48 divisors (see below), whose sum is σ = 39574673755200. Its totient is φ = 19468880480000.

The previous prime is 28003030278019. The next prime is 28003030278109. The reversal of 28003030278025 is 52087203030082.

It is not a de Polignac number, because 28003030278025 - 2⁵ = 28003030277993 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16577455 + ... + 18188404.

It is an arithmetic number, because the mean of its divisors is an integer number (824472369900).

Almost surely, 2^{28003030278025} is an apocalyptic number.

28003030278025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28003030278025 is a deficient number, since it is larger than the sum of its proper divisors (11571643477175).

28003030278025 is a wasteful number, since it uses less digits than its factorization.

28003030278025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34766010 (or 34766005 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 40.

The spelling of 28003030278025 in words is "twenty-eight trillion, three billion, thirty million, two hundred seventy-eight thousand, twenty-five".