16546225 has 6 divisors (see below), whose sum is σ = 20517350. Its totient is φ = 13236960.

The previous prime is 16546199. The next prime is 16546249. The reversal of 16546225 is 52264561.

It can be written as a sum of positive squares in 3 ways, for example, as 602176 + 15944049 = 776^2 + 3993^2 .

It is not a de Polignac number, because 16546225 - 2¹⁷ = 16415153 is a prime.

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, 330900 + ... + 330949.

Almost surely, 2^16546225 is an apocalyptic number.

It is an amenable number.

16546225 is a deficient number, since it is larger than the sum of its proper divisors (3971125).

16546225 is an equidigital number, since it uses as much as digits as its factorization.

16546225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661859 (or 661854 counting only the distinct ones).

The product of its digits is 14400, while the sum is 31.

The square root of 16546225 is about 4067.7051269727. The cubic root of 16546225 is about 254.8196854192.

The spelling of 16546225 in words is "sixteen million, five hundred forty-six thousand, two hundred twenty-five".