3601800225 has 27 divisors (see below), whose sum is σ = 6452837209. Its totient is φ = 1920480000.

The previous prime is 3601800143. The next prime is 3601800233. The reversal of 3601800225 is 5220081063.

The square root of 3601800225 is 60015.

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

3601800225 is a `hidden beast` number, since 360 + 1 + 80 + 0 + 225 = 666.

3601800225 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1586508561 + 2015291664 = 39831^2 + 44892^2 .

It is not a de Polignac number, because 3601800225 - 2⁹ = 3601799713 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 898225 + ... + 902225.

Almost surely, 2^3601800225 is an apocalyptic number.

3601800225 is the 60015-th square number.

3601800225 is the 30008-th centered octagonal number.

It is an amenable number.

3601800225 is a deficient number, since it is larger than the sum of its proper divisors (2851036984).

3601800225 is an frugal number, since it uses more digits than its factorization.

3601800225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8018 (or 4009 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The cubic root of 3601800225 is about 1532.8742906226.

Adding to 3601800225 its reverse (5220081063), we get a palindrome (8821881288).

The spelling of 3601800225 in words is "three billion, six hundred one million, eight hundred thousand, two hundred twenty-five".