1005255422905 has 8 divisors (see below), whose sum is σ = 1206552270600. Its totient is φ = 804040496256.

The previous prime is 1005255422887. The next prime is 1005255422921. The reversal of 1005255422905 is 5092245525001.

It can be written as a sum of positive squares in 4 ways, for example, as 631001454736 + 374253968169 = 794356^2 + 611763^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1005255422905 - 2¹¹ = 1005255420857 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20453260 + ... + 20502349.

It is an arithmetic number, because the mean of its divisors is an integer number (150819033825).

Almost surely, 2^{1005255422905} is an apocalyptic number.

It is an amenable number.

1005255422905 is a deficient number, since it is larger than the sum of its proper divisors (201296847695).

1005255422905 is an equidigital number, since it uses as much as digits as its factorization.

1005255422905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40960523.

The product of its (nonzero) digits is 180000, while the sum is 40.

The spelling of 1005255422905 in words is "one trillion, five billion, two hundred fifty-five million, four hundred twenty-two thousand, nine hundred five".