28525185768 has 64 divisors (see below), whose sum is σ = 76200696000. Its totient is φ = 8866962432.

The previous prime is 28525185763. The next prime is 28525185781. The reversal of 28525185768 is 86758152582.

It is not an unprimeable number, because it can be changed into a prime (28525185763) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 276238 + ... + 365181.

It is an arithmetic number, because the mean of its divisors is an integer number (1190635875).

Almost surely, 2^28525185768 is an apocalyptic number.

It is an amenable number.

28525185768 is an abundant number, since it is smaller than the sum of its proper divisors (47675510232).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28525185768 is a wasteful number, since it uses less digits than its factorization.

28525185768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641554 (or 641550 counting only the distinct ones).

The product of its digits is 10752000, while the sum is 57.

The spelling of 28525185768 in words is "twenty-eight billion, five hundred twenty-five million, one hundred eighty-five thousand, seven hundred sixty-eight".