16725965 has 4 divisors (see below), whose sum is σ = 20071164. Its totient is φ = 13380768.

The previous prime is 16725901. The next prime is 16725971. The reversal of 16725965 is 56952761.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9554281 + 7171684 = 3091^2 + 2678^2 .

It is a cyclic number.

It is not a de Polignac number, because 16725965 - 2⁶ = 16725901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1672592 + ... + 1672601.

It is an arithmetic number, because the mean of its divisors is an integer number (5017791).

Almost surely, 2^16725965 is an apocalyptic number.

It is an amenable number.

16725965 is a deficient number, since it is larger than the sum of its proper divisors (3345199).

16725965 is an equidigital number, since it uses as much as digits as its factorization.

16725965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3345198.

The product of its digits is 113400, while the sum is 41.

The square root of 16725965 is about 4089.7389892266. The cubic root of 16725965 is about 255.7390580450.

The spelling of 16725965 in words is "sixteen million, seven hundred twenty-five thousand, nine hundred sixty-five".