16625001 has 8 divisors (see below), whose sum is σ = 22530304. Its totient is φ = 10901520.

The previous prime is 16624999. The next prime is 16625009. The reversal of 16625001 is 10052661.

It is a happy number.

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

It is not a de Polignac number, because 16625001 - 2¹ = 16624999 is a prime.

It is a Duffinian number.

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 7 ways as a sum of consecutive naturals, for example, 45241 + ... + 45606.

It is an arithmetic number, because the mean of its divisors is an integer number (2816288).

Almost surely, 2^16625001 is an apocalyptic number.

It is an amenable number.

16625001 is a deficient number, since it is larger than the sum of its proper divisors (5905303).

16625001 is an equidigital number, since it uses as much as digits as its factorization.

16625001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90911.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 16625001 is about 4077.3767302029. The cubic root of 16625001 is about 255.2234412173.

Adding to 16625001 its reverse (10052661), we get a palindrome (26677662).

The spelling of 16625001 in words is "sixteen million, six hundred twenty-five thousand, one".