28205425130884 has 9 divisors (see below), whose sum is σ = 49359512567127. Its totient is φ = 14102707254564.

The previous prime is 28205425130867. The next prime is 28205425130989. The reversal of 28205425130884 is 48803152450282.

The square root of 28205425130884 is 5310878.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 9294037 + ... + 11949475.

Almost surely, 2^{28205425130884} is an apocalyptic number.

28205425130884 is the 5310878-th square number.

It is an amenable number.

28205425130884 is a deficient number, since it is larger than the sum of its proper divisors (21154087436243).

28205425130884 is an frugal number, since it uses more digits than its factorization.

28205425130884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5310882 (or 2655441 counting only the distinct ones).

The product of its (nonzero) digits is 4915200, while the sum is 52.

The spelling of 28205425130884 in words is "twenty-eight trillion, two hundred five billion, four hundred twenty-five million, one hundred thirty thousand, eight hundred eighty-four".