1325732109 has 16 divisors (see below), whose sum is σ = 1905456000. Its totient is φ = 815046336.

The previous prime is 1325732069. The next prime is 1325732113. The reversal of 1325732109 is 9012375231.

It is not a de Polignac number, because 1325732109 - 2¹⁷ = 1325601037 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1325732109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1325732189) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25792 + ... + 57590.

It is an arithmetic number, because the mean of its divisors is an integer number (119091000).

Almost surely, 2^1325732109 is an apocalyptic number.

It is an amenable number.

1325732109 is a deficient number, since it is larger than the sum of its proper divisors (579723891).

1325732109 is a wasteful number, since it uses less digits than its factorization.

1325732109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32884.

The product of its (nonzero) digits is 11340, while the sum is 33.

The square root of 1325732109 is about 36410.6043481841. The cubic root of 1325732109 is about 1098.5468715832.

The spelling of 1325732109 in words is "one billion, three hundred twenty-five million, seven hundred thirty-two thousand, one hundred nine".