3613428225 has 144 divisors (see below), whose sum is σ = 7643510784. Its totient is φ = 1675080000.

The previous prime is 3613428209. The next prime is 3613428229. The reversal of 3613428225 is 5228243163.

3613428225 is a `hidden beast` number, since 3 + 6 + 1 + 3 + 428 + 225 = 666.

It is not a de Polignac number, because 3613428225 - 2⁴ = 3613428209 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3613428225.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3613428229) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 1535800 + ... + 1538150.

It is an arithmetic number, because the mean of its divisors is an integer number (53079936).

Almost surely, 2^3613428225 is an apocalyptic number.

It is an amenable number.

3613428225 is an abundant number, since it is smaller than the sum of its proper divisors (4030082559).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3613428225 is a wasteful number, since it uses less digits than its factorization.

3613428225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2410 (or 2393 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 3613428225 is about 60111.7977189170. The cubic root of 3613428225 is about 1534.5220884154.

The spelling of 3613428225 in words is "three billion, six hundred thirteen million, four hundred twenty-eight thousand, two hundred twenty-five".