4001445255281 has 2 divisors, whose sum is σ = 4001445255282. Its totient is φ = 4001445255280.

The previous prime is 4001445255233. The next prime is 4001445255389. The reversal of 4001445255281 is 1825525441004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3452223456256 + 549221799025 = 1858016^2 + 741095^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4001445255281 is a prime.

It is a super-2 number, since 2×4001445255281² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4001445255221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2000722627640 + 2000722627641.

It is an arithmetic number, because the mean of its divisors is an integer number (2000722627641).

Almost surely, 2^{4001445255281} is an apocalyptic number.

It is an amenable number.

4001445255281 is a deficient number, since it is larger than the sum of its proper divisors (1).

4001445255281 is an equidigital number, since it uses as much as digits as its factorization.

4001445255281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256000, while the sum is 41.

The spelling of 4001445255281 in words is "four trillion, one billion, four hundred forty-five million, two hundred fifty-five thousand, two hundred eighty-one".