16231225 has 12 divisors (see below), whose sum is σ = 21186640. Its totient is φ = 12301200.

The previous prime is 16231217. The next prime is 16231273. The reversal of 16231225 is 52213261.

It is not a de Polignac number, because 16231225 - 2³ = 16231217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16231196 and 16231205.

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, 16611 + ... + 17560.

Almost surely, 2^16231225 is an apocalyptic number.

It is an amenable number.

16231225 is a deficient number, since it is larger than the sum of its proper divisors (4955415).

16231225 is a wasteful number, since it uses less digits than its factorization.

16231225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34200 (or 34195 counting only the distinct ones).

The product of its digits is 720, while the sum is 22.

The square root of 16231225 is about 4028.7994489674. The cubic root of 16231225 is about 253.1922642963.

Adding to 16231225 its reverse (52213261), we get a palindrome (68444486).

The spelling of 16231225 in words is "sixteen million, two hundred thirty-one thousand, two hundred twenty-five".