16103225 has 6 divisors (see below), whose sum is σ = 19968030. Its totient is φ = 12882560.

The previous prime is 16103221. The next prime is 16103237. The reversal of 16103225 is 52230161.

It can be written as a sum of positive squares in 3 ways, for example, as 674041 + 15429184 = 821^2 + 3928^2 .

It is not a de Polignac number, because 16103225 - 2² = 16103221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16103197 and 16103206.

It is not an unprimeable number, because it can be changed into a prime (16103221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 322040 + ... + 322089.

It is an arithmetic number, because the mean of its divisors is an integer number (3328005).

Almost surely, 2^16103225 is an apocalyptic number.

It is an amenable number.

16103225 is a deficient number, since it is larger than the sum of its proper divisors (3864805).

16103225 is an equidigital number, since it uses as much as digits as its factorization.

16103225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644139 (or 644134 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 16103225 is about 4012.8823805340. The cubic root of 16103225 is about 252.5249460698.

Adding to 16103225 its reverse (52230161), we get a palindrome (68333386).

The spelling of 16103225 in words is "sixteen million, one hundred three thousand, two hundred twenty-five".