1322255000 has 160 divisors (see below), whose sum is σ = 3500442000. Its totient is φ = 463680000.

The previous prime is 1322254963. The next prime is 1322255021. The reversal of 1322255000 is 5522231.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

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 in 39 ways as a sum of consecutive naturals, for example, 1594586 + ... + 1595414.

Almost surely, 2^1322255000 is an apocalyptic number.

1322255000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1322255000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1750221000).

1322255000 is an abundant number, since it is smaller than the sum of its proper divisors (2178187000).

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

1322255000 is a wasteful number, since it uses less digits than its factorization.

1322255000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 895 (or 876 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 1322255000 is about 36362.8244227535. The cubic root of 1322255000 is about 1097.5856136394.

Adding to 1322255000 its reverse (5522231), we get a palindrome (1327777231).

The spelling of 1322255000 in words is "one billion, three hundred twenty-two million, two hundred fifty-five thousand".