1322225520 has 160 divisors (see below), whose sum is σ = 5110387200. Its totient is φ = 274744320.

The previous prime is 1322225501. The next prime is 1322225551. The reversal of 1322225520 is 255222231.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17295 + ... + 54254.

It is an arithmetic number, because the mean of its divisors is an integer number (31939920).

Almost surely, 2^1322225520 is an apocalyptic number.

1322225520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1322225520 is an abundant number, since it is smaller than the sum of its proper divisors (3788161680).

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

1322225520 is a wasteful number, since it uses less digits than its factorization.

1322225520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71583 (or 71577 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 1322225520 is about 36362.4190614431. The cubic root of 1322225520 is about 1097.5774565985.

Adding to 1322225520 its reverse (255222231), we get a palindrome (1577447751).

The spelling of 1322225520 in words is "one billion, three hundred twenty-two million, two hundred twenty-five thousand, five hundred twenty".