16224516225 has 36 divisors (see below), whose sum is σ = 29342088256. Its totient is φ = 8569052640.

The previous prime is 16224516211. The next prime is 16224516229. The reversal of 16224516225 is 52261542261.

16224516225 is a `hidden beast` number, since 1 + 6 + 2 + 24 + 5 + 1 + 622 + 5 = 666.

It is not a de Polignac number, because 16224516225 - 2⁵ = 16224516193 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16224516225.

It is not an unprimeable number, because it can be changed into a prime (16224516229) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 326869 + ... + 373218.

Almost surely, 2^16224516225 is an apocalyptic number.

16224516225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16224516225 is a deficient number, since it is larger than the sum of its proper divisors (13117572031).

16224516225 is a wasteful number, since it uses less digits than its factorization.

16224516225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700206 (or 700198 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The spelling of 16224516225 in words is "sixteen billion, two hundred twenty-four million, five hundred sixteen thousand, two hundred twenty-five".