8135525 has 6 divisors (see below), whose sum is σ = 10088082. Its totient is φ = 6508400.

The previous prime is 8135521. The next prime is 8135551. The reversal of 8135525 is 5255318.

It can be written as a sum of positive squares in 3 ways, for example, as 556516 + 7579009 = 746^2 + 2753^2 .

It is not a de Polignac number, because 8135525 - 2² = 8135521 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 (8135521) 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, 162686 + ... + 162735.

It is an arithmetic number, because the mean of its divisors is an integer number (1681347).

Almost surely, 2^8135525 is an apocalyptic number.

It is an amenable number.

8135525 is a deficient number, since it is larger than the sum of its proper divisors (1952557).

8135525 is a wasteful number, since it uses less digits than its factorization.

8135525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325431 (or 325426 counting only the distinct ones).

The product of its digits is 6000, while the sum is 29.

The square root of 8135525 is about 2852.2841723783. The cubic root of 8135525 is about 201.1230569120.

The spelling of 8135525 in words is "eight million, one hundred thirty-five thousand, five hundred twenty-five".