16001225225 has 12 divisors (see below), whose sum is σ = 19854294720. Its totient is φ = 12792738000.

The previous prime is 16001225209. The next prime is 16001225249. The reversal of 16001225225 is 52252210061.

It is not a de Polignac number, because 16001225225 - 2⁴ = 16001225209 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 16001225194 and 16001225203.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 166301 + ... + 244250.

It is an arithmetic number, because the mean of its divisors is an integer number (1654524560).

Almost surely, 2^16001225225 is an apocalyptic number.

It is an amenable number.

16001225225 is a deficient number, since it is larger than the sum of its proper divisors (3853069495).

16001225225 is a wasteful number, since it uses less digits than its factorization.

16001225225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412120 (or 412115 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 16001225225 its reverse (52252210061), we get a palindrome (68253435286).

The spelling of 16001225225 in words is "sixteen billion, one million, two hundred twenty-five thousand, two hundred twenty-five".