16203225 has 24 divisors (see below), whose sum is σ = 27518080. Its totient is φ = 8406720.

The previous prime is 16203221. The next prime is 16203233. The reversal of 16203225 is 52230261.

It is not a de Polignac number, because 16203225 - 2² = 16203221 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16203221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 145 + ... + 5694.

Almost surely, 2^16203225 is an apocalyptic number.

16203225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16203225 is a deficient number, since it is larger than the sum of its proper divisors (11314855).

16203225 is a wasteful number, since it uses less digits than its factorization.

16203225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5889 (or 5884 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 16203225 is about 4025.3229684089. The cubic root of 16203225 is about 253.0465890341.

Adding to 16203225 its reverse (52230261), we get a palindrome (68433486).

The spelling of 16203225 in words is "sixteen million, two hundred three thousand, two hundred twenty-five".