196138265625 has 63 divisors (see below), whose sum is σ = 354434115529. Its totient is φ = 104518500000.

The previous prime is 196138265623. The next prime is 196138265627. The reversal of 196138265625 is 526562831691.

The square root of 196138265625 is 442875.

It is a perfect power (a square), and thus also a powerful number.

196138265625 is a `hidden beast` number, since 1 + 9 + 6 + 1 + 3 + 8 + 2 + 6 + 5 + 625 = 666.

It is an interprime number because it is at equal distance from previous prime (196138265623) and next prime (196138265627).

It can be written as a sum of positive squares in 10 ways, for example, as 195241143321 + 897122304 = 441861^2 + 29952^2 .

It is not a de Polignac number, because 196138265625 - 2¹ = 196138265623 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (196138265623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 62 ways as a sum of consecutive naturals, for example, 166077535 + ... + 166078715.

Almost surely, 2^196138265625 is an apocalyptic number.

196138265625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

196138265625 is the 442875-th square number.

196138265625 is the 221438-th centered octagonal number.

It is an amenable number.

196138265625 is a deficient number, since it is larger than the sum of its proper divisors (158295849904).

196138265625 is an frugal number, since it uses more digits than its factorization.

196138265625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2398 (or 1189 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 54.

The spelling of 196138265625 in words is "one hundred ninety-six billion, one hundred thirty-eight million, two hundred sixty-five thousand, six hundred twenty-five".