3721508225 has 6 divisors (see below), whose sum is σ = 4614670230. Its totient is φ = 2977206560.

The previous prime is 3721508209. The next prime is 3721508237. The reversal of 3721508225 is 5228051273.

3721508225 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 51208336 + 3670299889 = 7156^2 + 60583^2 .

It is not a de Polignac number, because 3721508225 - 2⁴ = 3721508209 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 74430140 + ... + 74430189.

It is an arithmetic number, because the mean of its divisors is an integer number (769111705).

Almost surely, 2^3721508225 is an apocalyptic number.

It is an amenable number.

3721508225 is a deficient number, since it is larger than the sum of its proper divisors (893162005).

3721508225 is a wasteful number, since it uses less digits than its factorization.

3721508225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148860339 (or 148860334 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 3721508225 is about 61004.1656364547. The cubic root of 3721508225 is about 1549.6715537159.

Adding to 3721508225 its reverse (5228051273), we get a palindrome (8949559498).

The spelling of 3721508225 in words is "three billion, seven hundred twenty-one million, five hundred eight thousand, two hundred twenty-five".