28854118225 has 27 divisors (see below), whose sum is σ = 36523900819. Its totient is φ = 22612428800.

The previous prime is 28854118157. The next prime is 28854118247. The reversal of 28854118225 is 52281145882.

The square root of 28854118225 is 169865.

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

It can be written as a sum of positive squares in 13 ways, for example, as 1504896849 + 27349221376 = 38793^2 + 165376^2 .

It is not a de Polignac number, because 28854118225 - 2¹⁷ = 28853987153 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 45013905 + ... + 45014545.

Almost surely, 2^28854118225 is an apocalyptic number.

28854118225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28854118225 is the 169865-th square number.

28854118225 is the 84933-rd centered octagonal number.

It is an amenable number.

28854118225 is a deficient number, since it is larger than the sum of its proper divisors (7669782594).

28854118225 is an frugal number, since it uses more digits than its factorization.

28854118225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1398 (or 699 counting only the distinct ones).

The product of its digits is 409600, while the sum is 46.

The spelling of 28854118225 in words is "twenty-eight billion, eight hundred fifty-four million, one hundred eighteen thousand, two hundred twenty-five".