275825813 has 2 divisors, whose sum is σ = 275825814. Its totient is φ = 275825812.

The previous prime is 275825791. The next prime is 275825857. The reversal of 275825813 is 318528572.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 248598289 + 27227524 = 15767^2 + 5218^2 .

It is a cyclic number.

It is not a de Polignac number, because 275825813 - 2²⁴ = 259048597 is a prime.

It is a super-2 number, since 2×275825813² = 152159758234221938, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (275825113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137912906 + 137912907.

It is an arithmetic number, because the mean of its divisors is an integer number (137912907).

Almost surely, 2^275825813 is an apocalyptic number.

It is an amenable number.

275825813 is a deficient number, since it is larger than the sum of its proper divisors (1).

275825813 is an equidigital number, since it uses as much as digits as its factorization.

275825813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 134400, while the sum is 41.

The square root of 275825813 is about 16608.0044857894. The cubic root of 275825813 is about 650.9460094928.

The spelling of 275825813 in words is "two hundred seventy-five million, eight hundred twenty-five thousand, eight hundred thirteen".