1311502243225 has 24 divisors (see below), whose sum is σ = 1695343991040. Its totient is φ = 1005303480000.

The previous prime is 1311502243211. The next prime is 1311502243237. The reversal of 1311502243225 is 5223422051131.

It is a happy number.

It is not a de Polignac number, because 1311502243225 - 2¹⁷ = 1311502112153 is a prime.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8299255 + ... + 8455804.

It is an arithmetic number, because the mean of its divisors is an integer number (70639332960).

Almost surely, 2^{1311502243225} is an apocalyptic number.

It is an amenable number.

1311502243225 is a deficient number, since it is larger than the sum of its proper divisors (383841747815).

1311502243225 is a wasteful number, since it uses less digits than its factorization.

1311502243225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16755201 (or 16755196 counting only the distinct ones).

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

Adding to 1311502243225 its reverse (5223422051131), we get a palindrome (6534924294356).

The spelling of 1311502243225 in words is "one trillion, three hundred eleven billion, five hundred two million, two hundred forty-three thousand, two hundred twenty-five".