2581802851 has 2 divisors, whose sum is σ = 2581802852. Its totient is φ = 2581802850.

The previous prime is 2581802837. The next prime is 2581802863. The reversal of 2581802851 is 1582081852.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2581802851 - 2⁹ = 2581802339 is a prime.

It is a super-2 number, since 2×2581802851² = 13331411922863456402, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2581802051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1290901425 + 1290901426.

It is an arithmetic number, because the mean of its divisors is an integer number (1290901426).

Almost surely, 2^2581802851 is an apocalyptic number.

2581802851 is a deficient number, since it is larger than the sum of its proper divisors (1).

2581802851 is an equidigital number, since it uses as much as digits as its factorization.

2581802851 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51200, while the sum is 40.

The square root of 2581802851 is about 50811.4440948100. Note that the first 3 decimals coincide. The cubic root of 2581802851 is about 1371.8533622786.

The spelling of 2581802851 in words is "two billion, five hundred eighty-one million, eight hundred two thousand, eight hundred fifty-one".