28525368236 has 6 divisors (see below), whose sum is σ = 49919394420. Its totient is φ = 14262684116.

The previous prime is 28525368227. The next prime is 28525368259. The reversal of 28525368236 is 63286352582.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3565671026 + ... + 3565671033.

It is an arithmetic number, because the mean of its divisors is an integer number (8319899070).

Almost surely, 2^28525368236 is an apocalyptic number.

It is an amenable number.

28525368236 is a deficient number, since it is larger than the sum of its proper divisors (21394026184).

28525368236 is a wasteful number, since it uses less digits than its factorization.

28525368236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7131342063 (or 7131342061 counting only the distinct ones).

The product of its digits is 4147200, while the sum is 50.

The spelling of 28525368236 in words is "twenty-eight billion, five hundred twenty-five million, three hundred sixty-eight thousand, two hundred thirty-six".