1325203440511 has 16 divisors (see below), whose sum is σ = 1405107295488. Its totient is φ = 1247630860800.

The previous prime is 1325203440497. The next prime is 1325203440529. The reversal of 1325203440511 is 1150443025231.

It is not a de Polignac number, because 1325203440511 - 2⁵ = 1325203440479 is a prime.

It is a super-2 number, since 2×1325203440511² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1325203440541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9197421 + ... + 9340393.

It is an arithmetic number, because the mean of its divisors is an integer number (87819205968).

Almost surely, 2^{1325203440511} is an apocalyptic number.

1325203440511 is a deficient number, since it is larger than the sum of its proper divisors (79903854977).

1325203440511 is a wasteful number, since it uses less digits than its factorization.

1325203440511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151122.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 1325203440511 its reverse (1150443025231), we get a palindrome (2475646465742).

The spelling of 1325203440511 in words is "one trillion, three hundred twenty-five billion, two hundred three million, four hundred forty thousand, five hundred eleven".