28250808025 has 24 divisors (see below), whose sum is σ = 38566281600. Its totient is φ = 20357524800.

The previous prime is 28250808007. The next prime is 28250808037. The reversal of 28250808025 is 52080805282.

It is not a de Polignac number, because 28250808025 - 2⁵ = 28250807993 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 441265 + ... + 501214.

It is an arithmetic number, because the mean of its divisors is an integer number (1606928400).

Almost surely, 2^28250808025 is an apocalyptic number.

28250808025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28250808025 is a deficient number, since it is larger than the sum of its proper divisors (10315473575).

28250808025 is a wasteful number, since it uses less digits than its factorization.

28250808025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 942609 (or 942604 counting only the distinct ones).

The product of its (nonzero) digits is 102400, while the sum is 40.

The spelling of 28250808025 in words is "twenty-eight billion, two hundred fifty million, eight hundred eight thousand, twenty-five".