1325832816 has 120 divisors (see below), whose sum is σ = 4302696832. Its totient is φ = 344361600.

The previous prime is 1325832811. The next prime is 1325832829. The reversal of 1325832816 is 6182385231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1325832811) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24351 + ... + 56961.

Almost surely, 2^1325832816 is an apocalyptic number.

1325832816 is a gapful number since it is divisible by the number (16) 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 1325832816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2151348416).

1325832816 is an abundant number, since it is smaller than the sum of its proper divisors (2976864016).

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

1325832816 is a wasteful number, since it uses less digits than its factorization.

1325832816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32651 (or 32634 counting only the distinct ones).

The product of its digits is 69120, while the sum is 39.

The square root of 1325832816 is about 36411.9872569460. The cubic root of 1325832816 is about 1098.5746872980.

The spelling of 1325832816 in words is "one billion, three hundred twenty-five million, eight hundred thirty-two thousand, eight hundred sixteen".