6641425972 has 24 divisors (see below), whose sum is σ = 12538370376. Its totient is φ = 3066405888.

The previous prime is 6641425969. The next prime is 6641425979. The reversal of 6641425972 is 2795241466.

It can be written as a sum of positive squares in 4 ways, for example, as 545876496 + 6095549476 = 23364^2 + 78074^2 .

It is a super-2 number, since 2×6641425972² = 88217077883112289568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6641425979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 917793 + ... + 925000.

It is an arithmetic number, because the mean of its divisors is an integer number (522432099).

Almost surely, 2^6641425972 is an apocalyptic number.

It is an amenable number.

6641425972 is a deficient number, since it is larger than the sum of its proper divisors (5896944404).

6641425972 is a wasteful number, since it uses less digits than its factorization.

6641425972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1842867 (or 1842865 counting only the distinct ones).

The product of its digits is 725760, while the sum is 46.

The square root of 6641425972 is about 81494.9444566962. The cubic root of 6641425972 is about 1879.6938134976.

The spelling of 6641425972 in words is "six billion, six hundred forty-one million, four hundred twenty-five thousand, nine hundred seventy-two".