135805825 has 48 divisors (see below), whose sum is σ = 186049600. Its totient is φ = 97977600.

The previous prime is 135805763. The next prime is 135805829. The reversal of 135805825 is 528508531.

It is not a de Polignac number, because 135805825 - 2⁷ = 135805697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135805829) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1245871 + ... + 1245979.

Almost surely, 2^135805825 is an apocalyptic number.

It is an amenable number.

135805825 is a deficient number, since it is larger than the sum of its proper divisors (50243775).

135805825 is a wasteful number, since it uses less digits than its factorization.

135805825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242 (or 237 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 37.

The square root of 135805825 is about 11653.5756315390. The cubic root of 135805825 is about 514.0114571475.

The spelling of 135805825 in words is "one hundred thirty-five million, eight hundred five thousand, eight hundred twenty-five".