16177225 has 12 divisors (see below), whose sum is σ = 20316160. Its totient is φ = 12776400.

The previous prime is 16177219. The next prime is 16177229. The reversal of 16177225 is 52277161.

It is a de Polignac number, because none of the positive numbers 2^k-16177225 is a prime.

It is a nialpdrome in base 8.

It is not an unprimeable number, because it can be changed into a prime (16177229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2121 + ... + 6070.

Almost surely, 2^16177225 is an apocalyptic number.

It is an amenable number.

16177225 is a deficient number, since it is larger than the sum of its proper divisors (4138935).

16177225 is an equidigital number, since it uses as much as digits as its factorization.

16177225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8280 (or 8275 counting only the distinct ones).

The product of its digits is 5880, while the sum is 31.

The square root of 16177225 is about 4022.0921172942. The cubic root of 16177225 is about 252.9111688015.

It can be divided in two parts, 16 and 177225, that added together give a square (177241 = 421²).

The spelling of 16177225 in words is "sixteen million, one hundred seventy-seven thousand, two hundred twenty-five".