1325132220 has 24 divisors (see below), whose sum is σ = 3710370384. Its totient is φ = 353368576.

The previous prime is 1325132131. The next prime is 1325132227. The reversal of 1325132220 is 222315231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1325132227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11042709 + ... + 11042828.

It is an arithmetic number, because the mean of its divisors is an integer number (154598766).

Almost surely, 2^1325132220 is an apocalyptic number.

1325132220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1325132220 is an abundant number, since it is smaller than the sum of its proper divisors (2385238164).

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

1325132220 is a wasteful number, since it uses less digits than its factorization.

1325132220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22085549 (or 22085547 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 1325132220 is about 36402.3655824728. The cubic root of 1325132220 is about 1098.3811504183.

Adding to 1325132220 its reverse (222315231), we get a palindrome (1547447451).

The spelling of 1325132220 in words is "one billion, three hundred twenty-five million, one hundred thirty-two thousand, two hundred twenty".