16625338 has 4 divisors (see below), whose sum is σ = 24938010. Its totient is φ = 8312668.

The previous prime is 16625327. The next prime is 16625353. The reversal of 16625338 is 83352661.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 15578809 + 1046529 = 3947^2 + 1023^2 .

It is a super-2 number, since 2×16625338² = 552803727228488, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4156333 + ... + 4156336.

Almost surely, 2^16625338 is an apocalyptic number.

16625338 is a deficient number, since it is larger than the sum of its proper divisors (8312672).

16625338 is an equidigital number, since it uses as much as digits as its factorization.

16625338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8312671.

The product of its digits is 25920, while the sum is 34.

The square root of 16625338 is about 4077.4180555837. The cubic root of 16625338 is about 255.2251657229.

Adding to 16625338 its reverse (83352661), we get a palindrome (99977999).

The spelling of 16625338 in words is "sixteen million, six hundred twenty-five thousand, three hundred thirty-eight".