112125509 has 2 divisors, whose sum is σ = 112125510. Its totient is φ = 112125508.

The previous prime is 112125469. The next prime is 112125511. The reversal of 112125509 is 905521211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101949409 + 10176100 = 10097^2 + 3190^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-112125509 is a prime.

Together with 112125511, 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 (112125539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56062754 + 56062755.

It is an arithmetic number, because the mean of its divisors is an integer number (56062755).

Almost surely, 2^112125509 is an apocalyptic number.

It is an amenable number.

112125509 is a deficient number, since it is larger than the sum of its proper divisors (1).

112125509 is an equidigital number, since it uses as much as digits as its factorization.

112125509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 900, while the sum is 26.

The square root of 112125509 is about 10588.9333268276. The cubic root of 112125509 is about 482.2084418959.

The spelling of 112125509 in words is "one hundred twelve million, one hundred twenty-five thousand, five hundred nine".