4725216225 has 36 divisors (see below), whose sum is σ = 8467231500. Its totient is φ = 2518970880.

The previous prime is 4725216203. The next prime is 4725216241. The reversal of 4725216225 is 5226125274.

4725216225 is a `hidden beast` number, since 4 + 7 + 2 + 5 + 21 + 622 + 5 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 1703295441 + 3021920784 = 41271^2 + 54972^2 .

It is not a de Polignac number, because 4725216225 - 2⁶ = 4725216161 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 4725216225.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 772981 + ... + 779069.

It is an arithmetic number, because the mean of its divisors is an integer number (235200875).

Almost surely, 2^4725216225 is an apocalyptic number.

4725216225 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4725216225 is a deficient number, since it is larger than the sum of its proper divisors (3742015275).

4725216225 is a wasteful number, since it uses less digits than its factorization.

4725216225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9554 (or 9546 counting only the distinct ones).

The product of its digits is 67200, while the sum is 36.

The square root of 4725216225 is about 68740.2082117882. The cubic root of 4725216225 is about 1678.0590094001.

The spelling of 4725216225 in words is "four billion, seven hundred twenty-five million, two hundred sixteen thousand, two hundred twenty-five".