16451435164525 has 12 divisors (see below), whose sum is σ = 20951124999892. Its totient is φ = 12805441424640.

The previous prime is 16451435164511. The next prime is 16451435164537. The reversal of 16451435164525 is 52546153415461.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 729155456836 + 15722279707689 = 853906^2 + 3965133^2 .

It is not a de Polignac number, because 16451435164525 - 2¹⁵ = 16451435131757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8892666732 + ... + 8892668581.

Almost surely, 2^{16451435164525} is an apocalyptic number.

It is an amenable number.

16451435164525 is a deficient number, since it is larger than the sum of its proper divisors (4499689835367).

16451435164525 is a wasteful number, since it uses less digits than its factorization.

16451435164525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17785335360 (or 17785335355 counting only the distinct ones).

The product of its digits is 8640000, while the sum is 52.

Adding to 16451435164525 its reverse (52546153415461), we get a palindrome (68997588579986).

The spelling of 16451435164525 in words is "sixteen trillion, four hundred fifty-one billion, four hundred thirty-five million, one hundred sixty-four thousand, five hundred twenty-five".