135607525 has 6 divisors (see below), whose sum is σ = 168153362. Its totient is φ = 108486000.

The previous prime is 135607523. The next prime is 135607543. The reversal of 135607525 is 525706531.

It can be written as a sum of positive squares in 3 ways, for example, as 15507844 + 120099681 = 3938^2 + 10959^2 .

It is not a de Polignac number, because 135607525 - 2¹ = 135607523 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135607523) 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, 2712126 + ... + 2712175.

Almost surely, 2^135607525 is an apocalyptic number.

It is an amenable number.

135607525 is a deficient number, since it is larger than the sum of its proper divisors (32545837).

135607525 is an equidigital number, since it uses as much as digits as its factorization.

135607525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5424311 (or 5424306 counting only the distinct ones).

The product of its (nonzero) digits is 31500, while the sum is 34.

The square root of 135607525 is about 11645.0644051461. The cubic root of 135607525 is about 513.7611533938.

The spelling of 135607525 in words is "one hundred thirty-five million, six hundred seven thousand, five hundred twenty-five".