135725665 has 8 divisors (see below), whose sum is σ = 165631680. Its totient is φ = 106739952.

The previous prime is 135725651. The next prime is 135725669. The reversal of 135725665 is 566527531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 135725665 - 2²⁵ = 102171233 is a prime.

It is a super-2 number, since 2×135725665² = 36842912279384450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (135725669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 229749 + ... + 230338.

It is an arithmetic number, because the mean of its divisors is an integer number (20703960).

Almost surely, 2^135725665 is an apocalyptic number.

It is an amenable number.

135725665 is a deficient number, since it is larger than the sum of its proper divisors (29906015).

135725665 is an equidigital number, since it uses as much as digits as its factorization.

135725665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460151.

The product of its digits is 189000, while the sum is 40.

The square root of 135725665 is about 11650.1358361180. The cubic root of 135725665 is about 513.9103047169.

The spelling of 135725665 in words is "one hundred thirty-five million, seven hundred twenty-five thousand, six hundred sixty-five".