6465171725 has 12 divisors (see below), whose sum is σ = 8030215200. Its totient is φ = 5163490800.

The previous prime is 6465171721. The next prime is 6465171751. The reversal of 6465171725 is 5271715646.

It is not a de Polignac number, because 6465171725 - 2² = 6465171721 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6465171721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 200891 + ... + 230840.

It is an arithmetic number, because the mean of its divisors is an integer number (669184600).

Almost surely, 2^6465171725 is an apocalyptic number.

It is an amenable number.

6465171725 is a deficient number, since it is larger than the sum of its proper divisors (1565043475).

6465171725 is a wasteful number, since it uses less digits than its factorization.

6465171725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432340 (or 432335 counting only the distinct ones).

The product of its digits is 352800, while the sum is 44.

The square root of 6465171725 is about 80406.2915759706. The cubic root of 6465171725 is about 1862.9163527252.

The spelling of 6465171725 in words is "six billion, four hundred sixty-five million, one hundred seventy-one thousand, seven hundred twenty-five".