196979525 has 6 divisors (see below), whose sum is σ = 244254642. Its totient is φ = 157583600.

The previous prime is 196979509. The next prime is 196979537. The reversal of 196979525 is 525979691.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 923521 + 196056004 = 961^2 + 14002^2 .

It is not a de Polignac number, because 196979525 - 2⁴ = 196979509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 3939566 + ... + 3939615.

It is an arithmetic number, because the mean of its divisors is an integer number (40709107).

Almost surely, 2^196979525 is an apocalyptic number.

It is an amenable number.

196979525 is a deficient number, since it is larger than the sum of its proper divisors (47275117).

196979525 is an equidigital number, since it uses as much as digits as its factorization.

196979525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7879191 (or 7879186 counting only the distinct ones).

The product of its digits is 1530900, while the sum is 53.

The square root of 196979525 is about 14034.9394369908. The cubic root of 196979525 is about 581.8446275377.

The spelling of 196979525 in words is "one hundred ninety-six million, nine hundred seventy-nine thousand, five hundred twenty-five".