197025020305 has 4 divisors (see below), whose sum is σ = 236430024372. Its totient is φ = 157620016240.

The previous prime is 197025020281. The next prime is 197025020329. The reversal of 197025020305 is 503020520791.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 503020520791 = 317 ⋅1586815523.

It is an interprime number because it is at equal distance from previous prime (197025020281) and next prime (197025020329).

It can be written as a sum of positive squares in 2 ways, for example, as 94106605824 + 102918414481 = 306768^2 + 320809^2 .

It is not a de Polignac number, because 197025020305 - 2¹³ = 197025012113 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 19702502026 + ... + 19702502035.

It is an arithmetic number, because the mean of its divisors is an integer number (59107506093).

Almost surely, 2^197025020305 is an apocalyptic number.

It is an amenable number.

197025020305 is a deficient number, since it is larger than the sum of its proper divisors (39405004067).

197025020305 is an equidigital number, since it uses as much as digits as its factorization.

197025020305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39405004066.

The product of its (nonzero) digits is 18900, while the sum is 34.

The spelling of 197025020305 in words is "one hundred ninety-seven billion, twenty-five million, twenty thousand, three hundred five".