4100251081 has 2 divisors, whose sum is σ = 4100251082. Its totient is φ = 4100251080.

The previous prime is 4100251073. The next prime is 4100251087. The reversal of 4100251081 is 1801520014.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3414649225 + 685601856 = 58435^2 + 26184^2 .

It is a cyclic number.

It is not a de Polignac number, because 4100251081 - 2³ = 4100251073 is a prime.

It is a super-2 number, since 2×4100251081² = 33624117854483337122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4100251087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2050125540 + 2050125541.

It is an arithmetic number, because the mean of its divisors is an integer number (2050125541).

Almost surely, 2^4100251081 is an apocalyptic number.

It is an amenable number.

4100251081 is a deficient number, since it is larger than the sum of its proper divisors (1).

4100251081 is an equidigital number, since it uses as much as digits as its factorization.

4100251081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 320, while the sum is 22.

The square root of 4100251081 is about 64033.2029575282. The cubic root of 4100251081 is about 1600.5533347877.

Adding to 4100251081 its reverse (1801520014), we get a palindrome (5901771095).

The spelling of 4100251081 in words is "four billion, one hundred million, two hundred fifty-one thousand, eighty-one".