28000752825 has 24 divisors (see below), whose sum is σ = 46443473856. Its totient is φ = 14885704000.

The previous prime is 28000752779. The next prime is 28000752833. The reversal of 28000752825 is 52825700082.

It is a happy number.

It is not a de Polignac number, because 28000752825 - 2⁹ = 28000752313 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, 576906 + ... + 623555.

It is an arithmetic number, because the mean of its divisors is an integer number (1935144744).

Almost surely, 2^28000752825 is an apocalyptic number.

28000752825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28000752825 is a deficient number, since it is larger than the sum of its proper divisors (18442721031).

28000752825 is a wasteful number, since it uses less digits than its factorization.

28000752825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1200785 (or 1200780 counting only the distinct ones).

The product of its (nonzero) digits is 89600, while the sum is 39.

The spelling of 28000752825 in words is "twenty-eight billion, seven hundred fifty-two thousand, eight hundred twenty-five".