4425113016581 has 2 divisors, whose sum is σ = 4425113016582. Its totient is φ = 4425113016580.

The previous prime is 4425113016547. The next prime is 4425113016689. The reversal of 4425113016581 is 1856103115244.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4159845784900 + 265267231681 = 2039570^2 + 515041^2 .

It is a cyclic number.

It is not a de Polignac number, because 4425113016581 - 2⁶ = 4425113016517 is a prime.

It is a super-2 number, since 2×4425113016581² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4425113016281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2212556508290 + 2212556508291.

It is an arithmetic number, because the mean of its divisors is an integer number (2212556508291).

Almost surely, 2^{4425113016581} is an apocalyptic number.

It is an amenable number.

4425113016581 is a deficient number, since it is larger than the sum of its proper divisors (1).

4425113016581 is an equidigital number, since it uses as much as digits as its factorization.

4425113016581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 115200, while the sum is 41.

The spelling of 4425113016581 in words is "four trillion, four hundred twenty-five billion, one hundred thirteen million, sixteen thousand, five hundred eighty-one".