4125438081 has 16 divisors (see below), whose sum is σ = 6260829120. Its totient is φ = 2683211040.

The previous prime is 4125438067. The next prime is 4125438131. The reversal of 4125438081 is 1808345214.

It is not a de Polignac number, because 4125438081 - 2¹⁴ = 4125421697 is a prime.

It is a super-2 number, since 2×4125438081² = 34038478720329925122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4125438001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1862235 + ... + 1864448.

It is an arithmetic number, because the mean of its divisors is an integer number (391301820).

Almost surely, 2^4125438081 is an apocalyptic number.

4125438081 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

4125438081 is a deficient number, since it is larger than the sum of its proper divisors (2135391039).

4125438081 is a wasteful number, since it uses less digits than its factorization.

4125438081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3726733 (or 3726727 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 4125438081 is about 64229.5732587412. The cubic root of 4125438081 is about 1603.8239371234.

The spelling of 4125438081 in words is "four billion, one hundred twenty-five million, four hundred thirty-eight thousand, eighty-one".