16132505 has 8 divisors (see below), whose sum is σ = 19383624. Its totient is φ = 12889600.

The previous prime is 16132477. The next prime is 16132513. The reversal of 16132505 is 50523161.

It can be written as a sum of positive squares in 4 ways, for example, as 7054336 + 9078169 = 2656^2 + 3013^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-16132505 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3785 + ... + 6825.

It is an arithmetic number, because the mean of its divisors is an integer number (2422953).

Almost surely, 2^16132505 is an apocalyptic number.

It is an amenable number.

16132505 is a deficient number, since it is larger than the sum of its proper divisors (3251119).

16132505 is a wasteful number, since it uses less digits than its factorization.

16132505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4107.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 16132505 is about 4016.5289741268. The cubic root of 16132505 is about 252.6779061871.

Adding to 16132505 its reverse (50523161), we get a palindrome (66655666).

The spelling of 16132505 in words is "sixteen million, one hundred thirty-two thousand, five hundred five".