16825225 has 12 divisors (see below), whose sum is σ = 21159360. Its totient is φ = 13269200.

The previous prime is 16825177. The next prime is 16825243. The reversal of 16825225 is 52252861.

It is a de Polignac number, because none of the positive numbers 2^k-16825225 is a prime.

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, 2965 + ... + 6514.

It is an arithmetic number, because the mean of its divisors is an integer number (1763280).

Almost surely, 2^16825225 is an apocalyptic number.

It is an amenable number.

16825225 is a deficient number, since it is larger than the sum of its proper divisors (4334135).

16825225 is an equidigital number, since it uses as much as digits as its factorization.

16825225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9560 (or 9555 counting only the distinct ones).

The product of its digits is 9600, while the sum is 31.

The square root of 16825225 is about 4101.8562870973. The cubic root of 16825225 is about 256.2439538530.

The spelling of 16825225 in words is "sixteen million, eight hundred twenty-five thousand, two hundred twenty-five".