3613813225 has 27 divisors (see below), whose sum is σ = 4930048389. Its totient is φ = 2625823200.

The previous prime is 3613813219. The next prime is 3613813241. The reversal of 3613813225 is 5223183163.

The square root of 3613813225 is 60115.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 899820009 + 2713993216 = 29997^2 + 52096^2 .

It is not a de Polignac number, because 3613813225 - 2⁵ = 3613813193 is a prime.

It is a Duffinian number.

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 26 ways as a sum of consecutive naturals, for example, 3305779 + ... + 3306871.

Almost surely, 2^3613813225 is an apocalyptic number.

3613813225 is the 60115-th square number.

3613813225 is the 30058-th centered octagonal number.

It is an amenable number.

3613813225 is a deficient number, since it is larger than the sum of its proper divisors (1316235164).

3613813225 is an equidigital number, since it uses as much as digits as its factorization.

3613813225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2218 (or 1109 counting only the distinct ones).

The product of its digits is 25920, while the sum is 34.

The cubic root of 3613813225 is about 1534.5765860638.

Adding to 3613813225 its reverse (5223183163), we get a palindrome (8836996388).

The spelling of 3613813225 in words is "three billion, six hundred thirteen million, eight hundred thirteen thousand, two hundred twenty-five".