16625217 has 8 divisors (see below), whose sum is σ = 25333696. Its totient is φ = 9500112.

The previous prime is 16625153. The next prime is 16625233. The reversal of 16625217 is 71252661.

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

It is not a de Polignac number, because 16625217 - 2⁶ = 16625153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16625237) 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, 395818 + ... + 395859.

It is an arithmetic number, because the mean of its divisors is an integer number (3166712).

Almost surely, 2^16625217 is an apocalyptic number.

It is an amenable number.

16625217 is a deficient number, since it is larger than the sum of its proper divisors (8708479).

16625217 is an equidigital number, since it uses as much as digits as its factorization.

16625217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 791687.

The product of its digits is 5040, while the sum is 30.

The square root of 16625217 is about 4077.4032177355. The cubic root of 16625217 is about 255.2245465411.

Adding to 16625217 its reverse (71252661), we get a palindrome (87877878).

The spelling of 16625217 in words is "sixteen million, six hundred twenty-five thousand, two hundred seventeen".