6465825551 has 8 divisors (see below), whose sum is σ = 6496861824. Its totient is φ = 6434812120.

The previous prime is 6465825539. The next prime is 6465825593. The reversal of 6465825551 is 1555285646.

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

It is a cyclic number.

It is not a de Polignac number, because 6465825551 - 2¹⁰ = 6465824527 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6465825496 and 6465825505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6465825521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 884156 + ... + 891438.

It is an arithmetic number, because the mean of its divisors is an integer number (812107728).

Almost surely, 2^6465825551 is an apocalyptic number.

6465825551 is a deficient number, since it is larger than the sum of its proper divisors (31036273).

6465825551 is a wasteful number, since it uses less digits than its factorization.

6465825551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11421.

The product of its digits is 1440000, while the sum is 47.

The square root of 6465825551 is about 80410.3572371122. The cubic root of 6465825551 is about 1862.9791498244.

It can be divided in two parts, 64658 and 25551, that added together give a palindrome (90209).

The spelling of 6465825551 in words is "six billion, four hundred sixty-five million, eight hundred twenty-five thousand, five hundred fifty-one".