135507525 has 24 divisors (see below), whose sum is σ = 235833120. Its totient is φ = 68466240.

The previous prime is 135507523. The next prime is 135507529. The reversal of 135507525 is 525705531.

It is not a de Polignac number, because 135507525 - 2¹ = 135507523 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135507523) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46122 + ... + 48971.

It is an arithmetic number, because the mean of its divisors is an integer number (9826380).

Almost surely, 2^135507525 is an apocalyptic number.

135507525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

135507525 is a deficient number, since it is larger than the sum of its proper divisors (100325595).

135507525 is a wasteful number, since it uses less digits than its factorization.

135507525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95125 (or 95120 counting only the distinct ones).

The product of its (nonzero) digits is 26250, while the sum is 33.

The square root of 135507525 is about 11640.7699487620. The cubic root of 135507525 is about 513.6348360449.

The spelling of 135507525 in words is "one hundred thirty-five million, five hundred seven thousand, five hundred twenty-five".