16774225 has 12 divisors (see below), whose sum is σ = 22400476. Its totient is φ = 12386880.

The previous prime is 16774201. The next prime is 16774249. The reversal of 16774225 is 52247761.

It is an interprime number because it is at equal distance from previous prime (16774201) and next prime (16774249).

It can be written as a sum of positive squares in 6 ways, for example, as 2666689 + 14107536 = 1633^2 + 3756^2 .

It is a de Polignac number, because none of the positive numbers 2^k-16774225 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25482 + ... + 26131.

Almost surely, 2^16774225 is an apocalyptic number.

It is an amenable number.

16774225 is a deficient number, since it is larger than the sum of its proper divisors (5626251).

16774225 is a wasteful number, since it uses less digits than its factorization.

16774225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51636 (or 51631 counting only the distinct ones).

The product of its digits is 23520, while the sum is 34.

The square root of 16774225 is about 4095.6348714210. The cubic root of 16774225 is about 255.9847860832.

The spelling of 16774225 in words is "sixteen million, seven hundred seventy-four thousand, two hundred twenty-five".