2285651028581 has 2 divisors, whose sum is σ = 2285651028582. Its totient is φ = 2285651028580.

The previous prime is 2285651028491. The next prime is 2285651028613. The reversal of 2285651028581 is 1858201565822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1197820802500 + 1087830226081 = 1094450^2 + 1042991^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2285651028581 is a prime.

It is a super-2 number, since 2×2285651028581² (a number of 26 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2285651528581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1142825514290 + 1142825514291.

It is an arithmetic number, because the mean of its divisors is an integer number (1142825514291).

Almost surely, 2^{2285651028581} is an apocalyptic number.

It is an amenable number.

2285651028581 is a deficient number, since it is larger than the sum of its proper divisors (1).

2285651028581 is an equidigital number, since it uses as much as digits as its factorization.

2285651028581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3072000, while the sum is 53.

The spelling of 2285651028581 in words is "two trillion, two hundred eighty-five billion, six hundred fifty-one million, twenty-eight thousand, five hundred eighty-one".