195425777 has 2 divisors, whose sum is σ = 195425778. Its totient is φ = 195425776.

The previous prime is 195425723. The next prime is 195425819. The reversal of 195425777 is 777524591.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116553616 + 78872161 = 10796^2 + 8881^2 .

It is a cyclic number.

It is not a de Polignac number, because 195425777 - 2¹⁰ = 195424753 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (195425707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97712888 + 97712889.

It is an arithmetic number, because the mean of its divisors is an integer number (97712889).

Almost surely, 2^195425777 is an apocalyptic number.

It is an amenable number.

195425777 is a deficient number, since it is larger than the sum of its proper divisors (1).

195425777 is an equidigital number, since it uses as much as digits as its factorization.

195425777 is an evil number, because the sum of its binary digits is even.

The product of its digits is 617400, while the sum is 47.

The square root of 195425777 is about 13979.4769930781. The cubic root of 195425777 is about 580.3107500454.

The spelling of 195425777 in words is "one hundred ninety-five million, four hundred twenty-five thousand, seven hundred seventy-seven".