1325987143 has 8 divisors (see below), whose sum is σ = 1503143600. Its totient is φ = 1159567488.

The previous prime is 1325987141. The next prime is 1325987147. The reversal of 1325987143 is 3417895231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1325987143 - 2¹ = 1325987141 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1325987143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1325987141) 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, 2683938 + ... + 2684431.

It is an arithmetic number, because the mean of its divisors is an integer number (187892950).

Almost surely, 2^1325987143 is an apocalyptic number.

1325987143 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1325987143 is a deficient number, since it is larger than the sum of its proper divisors (177156457).

1325987143 is a wasteful number, since it uses less digits than its factorization.

1325987143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5368401.

The product of its digits is 181440, while the sum is 43.

The square root of 1325987143 is about 36414.1063737667. The cubic root of 1325987143 is about 1098.6173103588.

The spelling of 1325987143 in words is "one billion, three hundred twenty-five million, nine hundred eighty-seven thousand, one hundred forty-three".