195025111 has 2 divisors, whose sum is σ = 195025112. Its totient is φ = 195025110.

The previous prime is 195025109. The next prime is 195025157. The reversal of 195025111 is 111520591.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 195025111 - 2¹ = 195025109 is a prime.

Together with 195025109, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195029111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97512555 + 97512556.

It is an arithmetic number, because the mean of its divisors is an integer number (97512556).

Almost surely, 2^195025111 is an apocalyptic number.

195025111 is a deficient number, since it is larger than the sum of its proper divisors (1).

195025111 is an equidigital number, since it uses as much as digits as its factorization.

195025111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 450, while the sum is 25.

The square root of 195025111 is about 13965.1391328551. The cubic root of 195025111 is about 579.9138903079.

The spelling of 195025111 in words is "one hundred ninety-five million, twenty-five thousand, one hundred eleven".