16716825 has 18 divisors (see below), whose sum is σ = 29942094. Its totient is φ = 8915520.

The previous prime is 16716811. The next prime is 16716839. The reversal of 16716825 is 52861761.

It is an interprime number because it is at equal distance from previous prime (16716811) and next prime (16716839).

It can be written as a sum of positive squares in 3 ways, for example, as 3583449 + 13133376 = 1893^2 + 3624^2 .

It is not a de Polignac number, because 16716825 - 2⁵ = 16716793 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16716825.

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 17 ways as a sum of consecutive naturals, for example, 36924 + ... + 37373.

Almost surely, 2^16716825 is an apocalyptic number.

16716825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16716825 is a deficient number, since it is larger than the sum of its proper divisors (13225269).

16716825 is a wasteful number, since it uses less digits than its factorization.

16716825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74313 (or 74305 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 16716825 is about 4088.6214058042. The cubic root of 16716825 is about 255.6924661963.

The spelling of 16716825 in words is "sixteen million, seven hundred sixteen thousand, eight hundred twenty-five".