278030000225 has 6 divisors (see below), whose sum is σ = 344757200310. Its totient is φ = 222424000160.

The previous prime is 278030000191. The next prime is 278030000239. The reversal of 278030000225 is 522000030872.

It can be written as a sum of positive squares in 3 ways, for example, as 32140959841 + 245889040384 = 179279^2 + 495872^2 .

It is not a de Polignac number, because 278030000225 - 2⁸ = 278029999969 is a prime.

It is a super-2 number, since 2×278030000225² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5560599980 + ... + 5560600029.

It is an arithmetic number, because the mean of its divisors is an integer number (57459533385).

Almost surely, 2^278030000225 is an apocalyptic number.

278030000225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

278030000225 is a deficient number, since it is larger than the sum of its proper divisors (66727200085).

278030000225 is a wasteful number, since it uses less digits than its factorization.

278030000225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11121200019 (or 11121200014 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The spelling of 278030000225 in words is "two hundred seventy-eight billion, thirty million, two hundred twenty-five", and thus it is an aban number.