1311142156225 has 48 divisors (see below), whose sum is σ = 1788042093696. Its totient is φ = 945824256000.

The previous prime is 1311142156211. The next prime is 1311142156253. The reversal of 1311142156225 is 5226512411131.

It is not a de Polignac number, because 1311142156225 - 2²³ = 1311133767617 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 24885660 + ... + 24938290.

It is an arithmetic number, because the mean of its divisors is an integer number (37250876952).

Almost surely, 2^{1311142156225} is an apocalyptic number.

It is an amenable number.

1311142156225 is a deficient number, since it is larger than the sum of its proper divisors (476899937471).

1311142156225 is a wasteful number, since it uses less digits than its factorization.

1311142156225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53386 (or 53381 counting only the distinct ones).

The product of its digits is 14400, while the sum is 34.

Adding to 1311142156225 its reverse (5226512411131), we get a palindrome (6537654567356).

The spelling of 1311142156225 in words is "one trillion, three hundred eleven billion, one hundred forty-two million, one hundred fifty-six thousand, two hundred twenty-five".