113825281 has 2 divisors, whose sum is σ = 113825282. Its totient is φ = 113825280.

The previous prime is 113825279. The next prime is 113825339. The reversal of 113825281 is 182528311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84934656 + 28890625 = 9216^2 + 5375^2 .

It is a cyclic number.

It is not a de Polignac number, because 113825281 - 2¹ = 113825279 is a prime.

It is a super-2 number, since 2×113825281² = 25912389189457922, which contains 22 as substring.

Together with 113825279, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (113825381) 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, 56912640 + 56912641.

It is an arithmetic number, because the mean of its divisors is an integer number (56912641).

Almost surely, 2^113825281 is an apocalyptic number.

It is an amenable number.

113825281 is a deficient number, since it is larger than the sum of its proper divisors (1).

113825281 is an equidigital number, since it uses as much as digits as its factorization.

113825281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3840, while the sum is 31.

The square root of 113825281 is about 10668.8931478387. The cubic root of 113825281 is about 484.6329188228.

The spelling of 113825281 in words is "one hundred thirteen million, eight hundred twenty-five thousand, two hundred eighty-one".