6525405165 has 64 divisors (see below), whose sum is σ = 10780895232. Its totient is φ = 3369273600.

The previous prime is 6525405157. The next prime is 6525405181. The reversal of 6525405165 is 5615045256.

It is a happy number.

It is not a de Polignac number, because 6525405165 - 2³ = 6525405157 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 19714050 + ... + 19714380.

It is an arithmetic number, because the mean of its divisors is an integer number (168451488).

Almost surely, 2^6525405165 is an apocalyptic number.

It is an amenable number.

6525405165 is a deficient number, since it is larger than the sum of its proper divisors (4255490067).

6525405165 is a wasteful number, since it uses less digits than its factorization.

6525405165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690.

The product of its (nonzero) digits is 180000, while the sum is 39.

The square root of 6525405165 is about 80779.9799764768. The cubic root of 6525405165 is about 1868.6838293964.

The spelling of 6525405165 in words is "six billion, five hundred twenty-five million, four hundred five thousand, one hundred sixty-five".