275000025281 has 2 divisors, whose sum is σ = 275000025282. Its totient is φ = 275000025280.

The previous prime is 275000025269. The next prime is 275000025283. The reversal of 275000025281 is 182520000572.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 263127961600 + 11872063681 = 512960^2 + 108959^2 .

It is a cyclic number.

It is not a de Polignac number, because 275000025281 - 2⁶ = 275000025217 is a prime.

It is a super-2 number, since 2×275000025281² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 275000025283, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (275000025283) by changing a digit.

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 as a sum of consecutive naturals, namely, 137500012640 + 137500012641.

It is an arithmetic number, because the mean of its divisors is an integer number (137500012641).

Almost surely, 2^275000025281 is an apocalyptic number.

It is an amenable number.

275000025281 is a deficient number, since it is larger than the sum of its proper divisors (1).

275000025281 is an equidigital number, since it uses as much as digits as its factorization.

275000025281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11200, while the sum is 32.

The spelling of 275000025281 in words is "two hundred seventy-five billion, twenty-five thousand, two hundred eighty-one".