4255246981 has 2 divisors, whose sum is σ = 4255246982. Its totient is φ = 4255246980.

The previous prime is 4255246979. The next prime is 4255247027. The reversal of 4255246981 is 1896425524.

It is an a-pointer prime, because the next prime (4255247027) can be obtained adding 4255246981 to its sum of digits (46).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2886912900 + 1368334081 = 53730^2 + 36991^2 .

It is a cyclic number.

It is not a de Polignac number, because 4255246981 - 2¹ = 4255246979 is a prime.

It is a super-2 number, since 2×4255246981² = 36214253738619228722, which contains 22 as substring.

Together with 4255246979, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4255246921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2127623490 + 2127623491.

It is an arithmetic number, because the mean of its divisors is an integer number (2127623491).

Almost surely, 2^4255246981 is an apocalyptic number.

4255246981 is the 41257-th centered pentagonal number.

It is an amenable number.

4255246981 is a deficient number, since it is larger than the sum of its proper divisors (1).

4255246981 is an equidigital number, since it uses as much as digits as its factorization.

4255246981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 691200, while the sum is 46.

The square root of 4255246981 is about 65232.2541462427. The cubic root of 4255246981 is about 1620.4722218598.

The spelling of 4255246981 in words is "four billion, two hundred fifty-five million, two hundred forty-six thousand, nine hundred eighty-one".