196781725 has 24 divisors (see below), whose sum is σ = 286414208. Its totient is φ = 131284800.

The previous prime is 196781699. The next prime is 196781729. The reversal of 196781725 is 527187691.

It is a happy number.

It is not a de Polignac number, because 196781725 - 2⁹ = 196781213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196781729) 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 23 ways as a sum of consecutive naturals, for example, 8721 + ... + 21670.

Almost surely, 2^196781725 is an apocalyptic number.

It is an amenable number.

196781725 is a deficient number, since it is larger than the sum of its proper divisors (89632483).

196781725 is a wasteful number, since it uses less digits than its factorization.

196781725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30445 (or 30440 counting only the distinct ones).

The product of its digits is 211680, while the sum is 46.

The square root of 196781725 is about 14027.8909676401. The cubic root of 196781725 is about 581.6498062543.

It can be divided in two parts, 196781 and 725, that added together give a triangular number (197506 = T₆₂₈).

The spelling of 196781725 in words is "one hundred ninety-six million, seven hundred eighty-one thousand, seven hundred twenty-five".