1022255999 has 6 divisors (see below), whose sum is σ = 1068634896. Its totient is φ = 977809580.

The previous prime is 1022255987. The next prime is 1022256023. The reversal of 1022255999 is 9995522201.

It is a de Polignac number, because none of the positive numbers 2^k-1022255999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022255909) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 965687 + ... + 966744.

It is an arithmetic number, because the mean of its divisors is an integer number (178105816).

Almost surely, 2^1022255999 is an apocalyptic number.

1022255999 is a deficient number, since it is larger than the sum of its proper divisors (46378897).

1022255999 is an equidigital number, since it uses as much as digits as its factorization.

1022255999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1932477 (or 1932454 counting only the distinct ones).

The product of its (nonzero) digits is 145800, while the sum is 44.

The square root of 1022255999 is about 31972.7383719318. The cubic root of 1022255999 is about 1007.3643002855.

The spelling of 1022255999 in words is "one billion, twenty-two million, two hundred fifty-five thousand, nine hundred ninety-nine".