28253325020 has 24 divisors (see below), whose sum is σ = 59350095168. Its totient is φ = 11297880000.

The previous prime is 28253325007. The next prime is 28253325031. The reversal of 28253325020 is 2052335282.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147956 + ... + 279995.

It is an arithmetic number, because the mean of its divisors is an integer number (2472920632).

Almost surely, 2^28253325020 is an apocalyptic number.

28253325020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28253325020 is an abundant number, since it is smaller than the sum of its proper divisors (31096770148).

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

28253325020 is a wasteful number, since it uses less digits than its factorization.

28253325020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431261 (or 431259 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

The spelling of 28253325020 in words is "twenty-eight billion, two hundred fifty-three million, three hundred twenty-five thousand, twenty".