16725420513 has 24 divisors (see below), whose sum is σ = 25406611776. Its totient is φ = 10993222800.

The previous prime is 16725420511. The next prime is 16725420527. The reversal of 16725420513 is 31502452761.

16725420513 is a `hidden beast` number, since 1 + 6 + 72 + 54 + 20 + 513 = 666.

It is not a de Polignac number, because 16725420513 - 2¹ = 16725420511 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16725420511) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 467458 + ... + 501963.

It is an arithmetic number, because the mean of its divisors is an integer number (1058608824).

Almost surely, 2^16725420513 is an apocalyptic number.

It is an amenable number.

16725420513 is a deficient number, since it is larger than the sum of its proper divisors (8681191263).

16725420513 is an frugal number, since it uses more digits than its factorization.

16725420513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 969507 (or 969495 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The spelling of 16725420513 in words is "sixteen billion, seven hundred twenty-five million, four hundred twenty thousand, five hundred thirteen".