111825797 has 2 divisors, whose sum is σ = 111825798. Its totient is φ = 111825796.

The previous prime is 111825767. The next prime is 111825799. The reversal of 111825797 is 797528111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 106213636 + 5612161 = 10306^2 + 2369^2 .

It is an emirp because it is prime and its reverse (797528111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111825797 - 2⁶ = 111825733 is a prime.

Together with 111825799, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111825799) 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, 55912898 + 55912899.

It is an arithmetic number, because the mean of its divisors is an integer number (55912899).

Almost surely, 2^111825797 is an apocalyptic number.

It is an amenable number.

111825797 is a deficient number, since it is larger than the sum of its proper divisors (1).

111825797 is an equidigital number, since it uses as much as digits as its factorization.

111825797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35280, while the sum is 41.

The square root of 111825797 is about 10574.7717233045. The cubic root of 111825797 is about 481.7784100498.

The spelling of 111825797 in words is "one hundred eleven million, eight hundred twenty-five thousand, seven hundred ninety-seven".