1325636032 has 56 divisors (see below), whose sum is σ = 3014793056. Its totient is φ = 566535168.

The previous prime is 1325636021. The next prime is 1325636041. The reversal of 1325636032 is 2306365231.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (56).

It is a junction number, because it is equal to n+sod(n) for n = 1325635985 and 1325636003.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163138 + ... + 171070.

Almost surely, 2^1325636032 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1325636032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1507396528).

1325636032 is an abundant number, since it is smaller than the sum of its proper divisors (1689157024).

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

1325636032 is an equidigital number, since it uses as much as digits as its factorization.

1325636032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8325 (or 8315 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 31.

The square root of 1325636032 is about 36409.2849696338. The cubic root of 1325636032 is about 1098.5203333817.

The spelling of 1325636032 in words is "one billion, three hundred twenty-five million, six hundred thirty-six thousand, thirty-two".