4431225839981 has 2 divisors, whose sum is σ = 4431225839982. Its totient is φ = 4431225839980.

The previous prime is 4431225839941. The next prime is 4431225839983. The reversal of 4431225839981 is 1899385221344.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3081748651081 + 1349477188900 = 1755491^2 + 1161670^2 .

It is a cyclic number.

It is not a de Polignac number, because 4431225839981 - 2¹⁸ = 4431225577837 is a prime.

It is a super-2 number, since 2×4431225839981² (a number of 26 digits) contains 22 as substring.

Together with 4431225839983, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4431225839981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4431225839983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2215612919990 + 2215612919991.

It is an arithmetic number, because the mean of its divisors is an integer number (2215612919991).

Almost surely, 2^{4431225839981} is an apocalyptic number.

It is an amenable number.

4431225839981 is a deficient number, since it is larger than the sum of its proper divisors (1).

4431225839981 is an equidigital number, since it uses as much as digits as its factorization.

4431225839981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14929920, while the sum is 59.

The spelling of 4431225839981 in words is "four trillion, four hundred thirty-one billion, two hundred twenty-five million, eight hundred thirty-nine thousand, nine hundred eighty-one".