196121425 has 12 divisors (see below), whose sum is σ = 243400716. Its totient is φ = 156761600.

The previous prime is 196121357. The next prime is 196121473. The reversal of 196121425 is 524121691.

It can be written as a sum of positive squares in 6 ways, for example, as 9409 + 196112016 = 97^2 + 14004^2 .

It is not a de Polignac number, because 196121425 - 2⁷ = 196121297 is a prime.

It is a super-2 number, since 2×196121425² = 76927226688061250, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34377 + ... + 39673.

It is an arithmetic number, because the mean of its divisors is an integer number (20283393).

Almost surely, 2^196121425 is an apocalyptic number.

It is an amenable number.

196121425 is a deficient number, since it is larger than the sum of its proper divisors (47279291).

196121425 is a wasteful number, since it uses less digits than its factorization.

196121425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6788 (or 6783 counting only the distinct ones).

The product of its digits is 4320, while the sum is 31.

The square root of 196121425 is about 14004.3359357022. The cubic root of 196121425 is about 580.9985029828.

The spelling of 196121425 in words is "one hundred ninety-six million, one hundred twenty-one thousand, four hundred twenty-five".