6625163444 has 24 divisors (see below), whose sum is σ = 11713612680. Its totient is φ = 3278486016.

The previous prime is 6625163429. The next prime is 6625163507. The reversal of 6625163444 is 4443615266.

It can be written as a sum of positive squares in 4 ways, for example, as 911315344 + 5713848100 = 30188^2 + 75590^2 .

It is a super-2 number, since 2×6625163444² = 87785581319427882272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 400424 + ... + 416640.

It is an arithmetic number, because the mean of its divisors is an integer number (488067195).

Almost surely, 2^6625163444 is an apocalyptic number.

It is an amenable number.

6625163444 is a deficient number, since it is larger than the sum of its proper divisors (5088449236).

6625163444 is a wasteful number, since it uses less digits than its factorization.

6625163444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17267 (or 17265 counting only the distinct ones).

The product of its digits is 414720, while the sum is 41.

The square root of 6625163444 is about 81395.1070028168. The cubic root of 6625163444 is about 1878.1583220746.

The spelling of 6625163444 in words is "six billion, six hundred twenty-five million, one hundred sixty-three thousand, four hundred forty-four".