194425275197 has 2 divisors, whose sum is σ = 194425275198. Its totient is φ = 194425275196.

The previous prime is 194425275169. The next prime is 194425275227. The reversal of 194425275197 is 791572524491.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 192906302521 + 1518972676 = 439211^2 + 38974^2 .

It is a cyclic number.

It is not a de Polignac number, because 194425275197 - 2⁸ = 194425274941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (194425275127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97212637598 + 97212637599.

It is an arithmetic number, because the mean of its divisors is an integer number (97212637599).

Almost surely, 2^194425275197 is an apocalyptic number.

It is an amenable number.

194425275197 is a deficient number, since it is larger than the sum of its proper divisors (1).

194425275197 is an equidigital number, since it uses as much as digits as its factorization.

194425275197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6350400, while the sum is 56.

The spelling of 194425275197 in words is "one hundred ninety-four billion, four hundred twenty-five million, two hundred seventy-five thousand, one hundred ninety-seven".