197097049525 has 6 divisors (see below), whose sum is σ = 244400341442. Its totient is φ = 157677639600.

The previous prime is 197097049517. The next prime is 197097049529. The reversal of 197097049525 is 525940790791.

It can be written as a sum of positive squares in 3 ways, for example, as 39488843524 + 157608206001 = 198718^2 + 396999^2 .

It is not a de Polignac number, because 197097049525 - 2³ = 197097049517 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 197097049525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197097049529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3941940966 + ... + 3941941015.

Almost surely, 2^197097049525 is an apocalyptic number.

It is an amenable number.

197097049525 is a deficient number, since it is larger than the sum of its proper divisors (47303291917).

197097049525 is an equidigital number, since it uses as much as digits as its factorization.

197097049525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7883881991 (or 7883881986 counting only the distinct ones).

The product of its (nonzero) digits is 7144200, while the sum is 58.

The spelling of 197097049525 in words is "one hundred ninety-seven billion, ninety-seven million, forty-nine thousand, five hundred twenty-five".