135171925 has 24 divisors (see below), whose sum is σ = 193557056. Its totient is φ = 91722240.

The previous prime is 135171893. The next prime is 135171937. The reversal of 135171925 is 529171531.

It is not a de Polignac number, because 135171925 - 2⁵ = 135171893 is a prime.

It is a congruent 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 23 ways as a sum of consecutive naturals, for example, 12994 + ... + 20956.

Almost surely, 2^135171925 is an apocalyptic number.

It is an amenable number.

135171925 is a deficient number, since it is larger than the sum of its proper divisors (58385131).

135171925 is an equidigital number, since it uses as much as digits as its factorization.

135171925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8077 (or 8072 counting only the distinct ones).

The product of its digits is 9450, while the sum is 34.

The square root of 135171925 is about 11626.3461586175. The cubic root of 135171925 is about 513.2104602277.

The spelling of 135171925 in words is "one hundred thirty-five million, one hundred seventy-one thousand, nine hundred twenty-five".