27850603225 has 9 divisors (see below), whose sum is σ = 34535782717. Its totient is φ = 22279815040.

The previous prime is 27850603217. The next prime is 27850603273. The reversal of 27850603225 is 52230605872.

The square root of 27850603225 is 166885.

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

It can be written as a sum of positive squares in 4 ways, for example, as 279993289 + 27570609936 = 16733^2 + 166044^2 .

It is not a de Polignac number, because 27850603225 - 2³ = 27850603217 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 817737 + ... + 851113.

Almost surely, 2^27850603225 is an apocalyptic number.

27850603225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

27850603225 is the 166885-th square number.

27850603225 is the 83443-rd centered octagonal number.

It is an amenable number.

27850603225 is a deficient number, since it is larger than the sum of its proper divisors (6685179492).

27850603225 is an frugal number, since it uses more digits than its factorization.

27850603225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66764 (or 33382 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 40.

The spelling of 27850603225 in words is "twenty-seven billion, eight hundred fifty million, six hundred three thousand, two hundred twenty-five".