3858221825 has 54 divisors (see below), whose sum is σ = 5336170182. Its totient is φ = 2757497600.

The previous prime is 3858221813. The next prime is 3858221831. The reversal of 3858221825 is 5281228583.

It can be written as a sum of positive squares in 3 ways, for example, as 581002816 + 3277219009 = 24104^2 + 57247^2 .

It is not a de Polignac number, because 3858221825 - 2¹⁰ = 3858220801 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 29452010 + ... + 29452140.

Almost surely, 2^3858221825 is an apocalyptic number.

It is an amenable number.

3858221825 is a deficient number, since it is larger than the sum of its proper divisors (1477948357).

3858221825 is a wasteful number, since it uses less digits than its factorization.

3858221825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335 (or 176 counting only the distinct ones).

The product of its digits is 307200, while the sum is 44.

The square root of 3858221825 is about 62114.5862499301. The cubic root of 3858221825 is about 1568.4200944332.

The spelling of 3858221825 in words is "three billion, eight hundred fifty-eight million, two hundred twenty-one thousand, eight hundred twenty-five".