190729925 has 6 divisors (see below), whose sum is σ = 236505138. Its totient is φ = 152583920.

The previous prime is 190729921. The next prime is 190729951. The reversal of 190729925 is 529927091.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 10042561 + 180687364 = 3169^2 + 13442^2 .

It is not a de Polignac number, because 190729925 - 2² = 190729921 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190729921) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3814574 + ... + 3814623.

It is an arithmetic number, because the mean of its divisors is an integer number (39417523).

Almost surely, 2^190729925 is an apocalyptic number.

It is an amenable number.

190729925 is a deficient number, since it is larger than the sum of its proper divisors (45775213).

190729925 is an equidigital number, since it uses as much as digits as its factorization.

190729925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7629207 (or 7629202 counting only the distinct ones).

The product of its (nonzero) digits is 102060, while the sum is 44.

The square root of 190729925 is about 13810.5005340140. The cubic root of 190729925 is about 575.6249537769.

The spelling of 190729925 in words is "one hundred ninety million, seven hundred twenty-nine thousand, nine hundred twenty-five".