111025009 has 2 divisors, whose sum is σ = 111025010. Its totient is φ = 111025008.

The previous prime is 111025003. The next prime is 111025069. The reversal of 111025009 is 900520111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71774784 + 39250225 = 8472^2 + 6265^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111025009 is a prime.

It is not a weakly prime, because it can be changed into another prime (111025003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55512504 + 55512505.

It is an arithmetic number, because the mean of its divisors is an integer number (55512505).

Almost surely, 2^111025009 is an apocalyptic number.

It is an amenable number.

111025009 is a deficient number, since it is larger than the sum of its proper divisors (1).

111025009 is an equidigital number, since it uses as much as digits as its factorization.

111025009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90, while the sum is 19.

The square root of 111025009 is about 10536.8405606235. The cubic root of 111025009 is about 480.6256439459.

The spelling of 111025009 in words is "one hundred eleven million, twenty-five thousand, nine".