2425816181 has 2 divisors, whose sum is σ = 2425816182. Its totient is φ = 2425816180.

The previous prime is 2425816091. The next prime is 2425816199. The reversal of 2425816181 is 1816185242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1262665156 + 1163151025 = 35534^2 + 34105^2 .

It is a cyclic number.

It is not a de Polignac number, because 2425816181 - 2¹⁰ = 2425815157 is a prime.

It is a super-2 number, since 2×2425816181² = 11769168288002849522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2425816381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1212908090 + 1212908091.

It is an arithmetic number, because the mean of its divisors is an integer number (1212908091).

Almost surely, 2^2425816181 is an apocalyptic number.

It is an amenable number.

2425816181 is a deficient number, since it is larger than the sum of its proper divisors (1).

2425816181 is an equidigital number, since it uses as much as digits as its factorization.

2425816181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30720, while the sum is 38.

The square root of 2425816181 is about 49252.5753742888. The cubic root of 2425816181 is about 1343.6494010400.

The spelling of 2425816181 in words is "two billion, four hundred twenty-five million, eight hundred sixteen thousand, one hundred eighty-one".