1027255005 has 48 divisors (see below), whose sum is σ = 2154657024. Its totient is φ = 441976320.

The previous prime is 1027255001. The next prime is 1027255027. The reversal of 1027255005 is 5005527201.

It is a happy number.

1027255005 is a `hidden beast` number, since 102 + 7 + 2 + 550 + 0 + 5 = 666.

It is not a de Polignac number, because 1027255005 - 2² = 1027255001 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1027255005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1027255001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 90561 + ... + 101270.

It is an arithmetic number, because the mean of its divisors is an integer number (44888688).

Almost surely, 2^1027255005 is an apocalyptic number.

1027255005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1027255005 is an abundant number, since it is smaller than the sum of its proper divisors (1127402019).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1027255005 is a wasteful number, since it uses less digits than its factorization.

1027255005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191866 (or 191863 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 27.

The square root of 1027255005 is about 32050.8191002976. The cubic root of 1027255005 is about 1009.0036918997.

The spelling of 1027255005 in words is "one billion, twenty-seven million, two hundred fifty-five thousand, five".