4025066721 has 16 divisors (see below), whose sum is σ = 5817866880. Its totient is φ = 2460556800.

The previous prime is 4025066711. The next prime is 4025066737. The reversal of 4025066721 is 1276605204.

It is not a de Polignac number, because 4025066721 - 2⁷ = 4025066593 is a prime.

It is a super-3 number, since 3×4025066721³ (a number of 30 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (4025066711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 335856 + ... + 347633.

It is an arithmetic number, because the mean of its divisors is an integer number (363616680).

Almost surely, 2^4025066721 is an apocalyptic number.

It is an amenable number.

4025066721 is a deficient number, since it is larger than the sum of its proper divisors (1792800159).

4025066721 is a wasteful number, since it uses less digits than its factorization.

4025066721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683656.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 4025066721 is about 63443.4135352126. The cubic root of 4025066721 is about 1590.7100610039.

The spelling of 4025066721 in words is "four billion, twenty-five million, sixty-six thousand, seven hundred twenty-one".