135297525 has 24 divisors (see below), whose sum is σ = 244029024. Its totient is φ = 65598400.

The previous prime is 135297521. The next prime is 135297527. The reversal of 135297525 is 525792531.

It is not a de Polignac number, because 135297525 - 2² = 135297521 is a prime.

It is a super-2 number, since 2×135297525² = 36610840542251250, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135297521) by changing a digit.

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, 81174 + ... + 82823.

It is an arithmetic number, because the mean of its divisors is an integer number (10167876).

Almost surely, 2^135297525 is an apocalyptic number.

135297525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

135297525 is a deficient number, since it is larger than the sum of its proper divisors (108731499).

135297525 is a wasteful number, since it uses less digits than its factorization.

135297525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164021 (or 164016 counting only the distinct ones).

The product of its digits is 94500, while the sum is 39.

The square root of 135297525 is about 11631.7464294920. The cubic root of 135297525 is about 513.3693671881.

The spelling of 135297525 in words is "one hundred thirty-five million, two hundred ninety-seven thousand, five hundred twenty-five".