1325633431320 has 192 divisors, whose sum is σ = 4713924327840. Its totient is φ = 320411750400.

The previous prime is 1325633431319. The next prime is 1325633431327. The reversal of 1325633431320 is 231343365231.

1325633431320 is a `hidden beast` number, since 1 + 3 + 2 + 5 + 6 + 334 + 313 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1325633431327) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 837850 + ... + 1831190.

Almost surely, 2^{1325633431320} is an apocalyptic number.

1325633431320 is a gapful number since it is divisible by the number (10) 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 1325633431320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2356962163920).

1325633431320 is an abundant number, since it is smaller than the sum of its proper divisors (3388290896520).

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

1325633431320 is a wasteful number, since it uses less digits than its factorization.

1325633431320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 993706 (or 993699 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 36.

Adding to 1325633431320 its reverse (231343365231), we get a palindrome (1556976796551).

The spelling of 1325633431320 in words is "one trillion, three hundred twenty-five billion, six hundred thirty-three million, four hundred thirty-one thousand, three hundred twenty".