3848129572225 has 9 divisors (see below), whose sum is σ = 4771692831913. Its totient is φ = 3078495811120.

The previous prime is 3848129572213. The next prime is 3848129572297. The reversal of 3848129572225 is 5222759218483.

The square root of 3848129572225 is 1961665.

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 26980362049 + 3821149210176 = 164257^2 + 1954776^2 .

It is not a de Polignac number, because 3848129572225 - 2⁵ = 3848129572193 is a prime.

It is a super-2 number, since 2×3848129572225² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3848129572225.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 9612159 + ... + 10004491.

Almost surely, 2^{3848129572225} is an apocalyptic number.

3848129572225 is the 1961665-th square number.

3848129572225 is the 980833-rd centered octagonal number.

It is an amenable number.

3848129572225 is a deficient number, since it is larger than the sum of its proper divisors (923563259688).

3848129572225 is an frugal number, since it uses more digits than its factorization.

3848129572225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784676 (or 392338 counting only the distinct ones).

The product of its digits is 19353600, while the sum is 58.

The spelling of 3848129572225 in words is "three trillion, eight hundred forty-eight billion, one hundred twenty-nine million, five hundred seventy-two thousand, two hundred twenty-five".