16801225 has 48 divisors (see below), whose sum is σ = 26030080. Its totient is φ = 10497600.

The previous prime is 16801223. The next prime is 16801243. The reversal of 16801225 is 52210861.

It is not a de Polignac number, because 16801225 - 2¹ = 16801223 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 16801225.

It is not an unprimeable number, because it can be changed into a prime (16801223) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 102994 + ... + 103156.

Almost surely, 2^16801225 is an apocalyptic number.

It is an amenable number.

16801225 is a deficient number, since it is larger than the sum of its proper divisors (9228855).

16801225 is a wasteful number, since it uses less digits than its factorization.

16801225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230 (or 225 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 16801225 is about 4098.9297383585. The cubic root of 16801225 is about 256.1220578838.

The spelling of 16801225 in words is "sixteen million, eight hundred one thousand, two hundred twenty-five".