641025039 has 8 divisors (see below), whose sum is σ = 865519360. Its totient is φ = 421940376.

The previous prime is 641025013. The next prime is 641025041. The reversal of 641025039 is 930520146.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 641025039 - 2²⁵ = 607470607 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 641024997 and 641025015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641025139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1352137 + ... + 1352610.

It is an arithmetic number, because the mean of its divisors is an integer number (108189920).

Almost surely, 2^641025039 is an apocalyptic number.

641025039 is a deficient number, since it is larger than the sum of its proper divisors (224494321).

641025039 is a wasteful number, since it uses less digits than its factorization.

641025039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2704829.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 641025039 is about 25318.4722880351. The cubic root of 641025039 is about 862.2337096858.

The spelling of 641025039 in words is "six hundred forty-one million, twenty-five thousand, thirty-nine".