16814825 has 6 divisors (see below), whose sum is σ = 20850414. Its totient is φ = 13451840.

The previous prime is 16814773. The next prime is 16814827. The reversal of 16814825 is 52841861.

16814825 = 436² + 437² + ... + 510².

It can be written as a sum of positive squares in 3 ways, for example, as 258064 + 16556761 = 508^2 + 4069^2 .

It is not a de Polignac number, because 16814825 - 2¹⁰ = 16813801 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (16814827) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 336272 + ... + 336321.

It is an arithmetic number, because the mean of its divisors is an integer number (3475069).

Almost surely, 2^16814825 is an apocalyptic number.

It is an amenable number.

16814825 is a deficient number, since it is larger than the sum of its proper divisors (4035589).

16814825 is an equidigital number, since it uses as much as digits as its factorization.

16814825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 672603 (or 672598 counting only the distinct ones).

The product of its digits is 15360, while the sum is 35.

The square root of 16814825 is about 4100.5883724168. The cubic root of 16814825 is about 256.1911465078.

The spelling of 16814825 in words is "sixteen million, eight hundred fourteen thousand, eight hundred twenty-five".