2125082881 has 2 divisors, whose sum is σ = 2125082882. Its totient is φ = 2125082880.

The previous prime is 2125082867. The next prime is 2125082893. The reversal of 2125082881 is 1882805212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2039335281 + 85747600 = 45159^2 + 9260^2 .

It is a cyclic number.

It is not a de Polignac number, because 2125082881 - 2⁹ = 2125082369 is a prime.

It is a super-2 number, since 2×2125082881² = 9031954502238520322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2125082881.

It is not a weakly prime, because it can be changed into another prime (2125082821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1062541440 + 1062541441.

It is an arithmetic number, because the mean of its divisors is an integer number (1062541441).

Almost surely, 2^2125082881 is an apocalyptic number.

It is an amenable number.

2125082881 is a deficient number, since it is larger than the sum of its proper divisors (1).

2125082881 is an equidigital number, since it uses as much as digits as its factorization.

2125082881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20480, while the sum is 37.

The square root of 2125082881 is about 46098.6212483627. The cubic root of 2125082881 is about 1285.6575096522.

The spelling of 2125082881 in words is "two billion, one hundred twenty-five million, eighty-two thousand, eight hundred eighty-one".