28250527825 has 24 divisors (see below), whose sum is σ = 37779441336. Its totient is φ = 20832000000.

The previous prime is 28250527813. The next prime is 28250527843. The reversal of 28250527825 is 52872505282.

It can be written as a sum of positive squares in 12 ways, for example, as 10561261824 + 17689266001 = 102768^2 + 133001^2 .

It is not a de Polignac number, because 28250527825 - 2⁵ = 28250527793 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 165825 + ... + 289825.

It is an arithmetic number, because the mean of its divisors is an integer number (1574143389).

Almost surely, 2^28250527825 is an apocalyptic number.

28250527825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28250527825 is a deficient number, since it is larger than the sum of its proper divisors (9528913511).

28250527825 is a wasteful number, since it uses less digits than its factorization.

28250527825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124725 (or 124720 counting only the distinct ones).

The product of its (nonzero) digits is 896000, while the sum is 46.

The spelling of 28250527825 in words is "twenty-eight billion, two hundred fifty million, five hundred twenty-seven thousand, eight hundred twenty-five".