444825681 has 16 divisors (see below), whose sum is σ = 619376640. Its totient is φ = 283433040.

The previous prime is 444825679. The next prime is 444825683. The reversal of 444825681 is 186528444.

It is an interprime number because it is at equal distance from previous prime (444825679) and next prime (444825683).

It is not a de Polignac number, because 444825681 - 2¹ = 444825679 is a prime.

It is a super-2 number, since 2×444825681² = 395739772954227522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (444825683) 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, 162240 + ... + 164958.

It is an arithmetic number, because the mean of its divisors is an integer number (38711040).

Almost surely, 2^444825681 is an apocalyptic number.

It is an amenable number.

444825681 is a deficient number, since it is larger than the sum of its proper divisors (174550959).

444825681 is a wasteful number, since it uses less digits than its factorization.

444825681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5116.

The product of its digits is 245760, while the sum is 42.

The square root of 444825681 is about 21090.8909484640. The cubic root of 444825681 is about 763.3609694657.

The spelling of 444825681 in words is "four hundred forty-four million, eight hundred twenty-five thousand, six hundred eighty-one".