16447325 has 6 divisors (see below), whose sum is σ = 20394714. Its totient is φ = 13157840.

The previous prime is 16447303. The next prime is 16447357. The reversal of 16447325 is 52374461.

16447325 is nontrivially palindromic in base 12.

It can be written as a sum of positive squares in 3 ways, for example, as 109561 + 16337764 = 331^2 + 4042^2 .

It is not a de Polignac number, because 16447325 - 2⁸ = 16447069 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16447291 and 16447300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 328922 + ... + 328971.

It is an arithmetic number, because the mean of its divisors is an integer number (3399119).

Almost surely, 2^16447325 is an apocalyptic number.

It is an amenable number.

16447325 is a deficient number, since it is larger than the sum of its proper divisors (3947389).

16447325 is an equidigital number, since it uses as much as digits as its factorization.

16447325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657903 (or 657898 counting only the distinct ones).

The product of its digits is 20160, while the sum is 32.

The square root of 16447325 is about 4055.5301749586. The cubic root of 16447325 is about 254.3109682537.

The spelling of 16447325 in words is "sixteen million, four hundred forty-seven thousand, three hundred twenty-five".