16625004 has 96 divisors (see below), whose sum is σ = 45239040. Its totient is φ = 4704000.

The previous prime is 16624999. The next prime is 16625009. The reversal of 16625004 is 40052661.

It is an interprime number because it is at equal distance from previous prime (16624999) and next prime (16625009).

It is not an unprimeable number, because it can be changed into a prime (16625009) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 164554 + ... + 164654.

It is an arithmetic number, because the mean of its divisors is an integer number (471240).

Almost surely, 2^16625004 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16625004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22619520).

16625004 is an abundant number, since it is smaller than the sum of its proper divisors (28614036).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16625004 is a wasteful number, since it uses less digits than its factorization.

16625004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191 (or 189 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 16625004 is about 4077.3770980865. The cubic root of 16625004 is about 255.2234565691.

Adding to 16625004 its reverse (40052661), we get a palindrome (56677665).

It can be divided in two parts, 1662 and 5004, that added together give a palindrome (6666).

The spelling of 16625004 in words is "sixteen million, six hundred twenty-five thousand, four".