1285588081 has 2 divisors, whose sum is σ = 1285588082. Its totient is φ = 1285588080.

The previous prime is 1285588069. The next prime is 1285588097. The reversal of 1285588081 is 1808855821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1285581025 + 7056 = 35855^2 + 84^2 .

It is a cyclic number.

It is not a de Polignac number, because 1285588081 - 2⁵ = 1285588049 is a prime.

It is a super-2 number, since 2×1285588081² = 3305473428018525122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1285583081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 642794040 + 642794041.

It is an arithmetic number, because the mean of its divisors is an integer number (642794041).

Almost surely, 2^1285588081 is an apocalyptic number.

It is an amenable number.

1285588081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1285588081 is an equidigital number, since it uses as much as digits as its factorization.

1285588081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 204800, while the sum is 46.

The square root of 1285588081 is about 35855.0983961835. The cubic root of 1285588081 is about 1087.3447930348.

The spelling of 1285588081 in words is "one billion, two hundred eighty-five million, five hundred eighty-eight thousand, eighty-one".