6465125165 has 8 divisors (see below), whose sum is σ = 7776070008. Its totient is φ = 5160153600.

The previous prime is 6465125123. The next prime is 6465125189. The reversal of 6465125165 is 5615215646.

It can be written as a sum of positive squares in 4 ways, for example, as 213218404 + 6251906761 = 14602^2 + 79069^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6465125165 - 2²⁶ = 6398016301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1490936 + ... + 1495265.

It is an arithmetic number, because the mean of its divisors is an integer number (972008751).

Almost surely, 2^6465125165 is an apocalyptic number.

It is an amenable number.

6465125165 is a deficient number, since it is larger than the sum of its proper divisors (1310944843).

6465125165 is a wasteful number, since it uses less digits than its factorization.

6465125165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2986639.

The product of its digits is 216000, while the sum is 41.

The square root of 6465125165 is about 80406.0020458672. The cubic root of 6465125165 is about 1862.9118806814.

The spelling of 6465125165 in words is "six billion, four hundred sixty-five million, one hundred twenty-five thousand, one hundred sixty-five".