117925109 has 2 divisors, whose sum is σ = 117925110. Its totient is φ = 117925108.

The previous prime is 117925103. The next prime is 117925187. The reversal of 117925109 is 901529711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59830225 + 58094884 = 7735^2 + 7622^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117925109 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117925103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58962554 + 58962555.

It is an arithmetic number, because the mean of its divisors is an integer number (58962555).

Almost surely, 2^117925109 is an apocalyptic number.

It is an amenable number.

117925109 is a deficient number, since it is larger than the sum of its proper divisors (1).

117925109 is an equidigital number, since it uses as much as digits as its factorization.

117925109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5670, while the sum is 35.

The square root of 117925109 is about 10859.3328063928. The cubic root of 117925109 is about 490.3830255203.

The spelling of 117925109 in words is "one hundred seventeen million, nine hundred twenty-five thousand, one hundred nine".