1325143203444 has 18 divisors (see below), whose sum is σ = 3349667542130. Its totient is φ = 441714401136.

The previous prime is 1325143203427. The next prime is 1325143203469. The reversal of 1325143203444 is 4443023415231.

1325143203444 is a `hidden beast` number, since 1 + 3 + 2 + 5 + 1 + 4 + 3 + 203 + 444 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1182721500900 + 142421702544 = 1087530^2 + 377388^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×1325143203444² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 36809533429 = 1325143203444 / (1 + 3 + 2 + 5 + 1 + 4 + 3 + 2 + 0 + 3 + 4 + 4 + 4).

It is a junction number, because it is equal to n+sod(n) for n = 1325143203399 and 1325143203408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18404766679 + ... + 18404766750.

Almost surely, 2^{1325143203444} is an apocalyptic number.

It is an amenable number.

1325143203444 is an abundant number, since it is smaller than the sum of its proper divisors (2024524338686).

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

1325143203444 is a wasteful number, since it uses less digits than its factorization.

1325143203444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36809533439 (or 36809533434 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 36.

Adding to 1325143203444 its reverse (4443023415231), we get a palindrome (5768166618675).

The spelling of 1325143203444 in words is "one trillion, three hundred twenty-five billion, one hundred forty-three million, two hundred three thousand, four hundred forty-four".