278113843225 has 27 divisors (see below), whose sum is σ = 357261220407. Its totient is φ = 214759903680.

The previous prime is 278113843201. The next prime is 278113843237. The reversal of 278113843225 is 522348311872.

The square root of 278113843225 is 527365.

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 277504543369 + 609299856 = 526787^2 + 24684^2 .

It is not a de Polignac number, because 278113843225 - 2¹¹ = 278113841177 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 (13) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 76466107 + ... + 76469743.

Almost surely, 2^278113843225 is an apocalyptic number.

278113843225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

278113843225 is the 527365-th square number.

278113843225 is the 263683-rd centered octagonal number.

It is an amenable number.

278113843225 is a deficient number, since it is larger than the sum of its proper divisors (79147377182).

278113843225 is an frugal number, since it uses more digits than its factorization.

278113843225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7342 (or 3671 counting only the distinct ones).

The product of its digits is 645120, while the sum is 46.

The spelling of 278113843225 in words is "two hundred seventy-eight billion, one hundred thirteen million, eight hundred forty-three thousand, two hundred twenty-five".