1311351003025 has 48 divisors (see below), whose sum is σ = 1883629440000. Its totient is φ = 887023690560.

The previous prime is 1311351003013. The next prime is 1311351003059. The reversal of 1311351003025 is 5203001531131.

It is not a de Polignac number, because 1311351003025 - 2⁵ = 1311351002993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9503476 + ... + 9640474.

It is an arithmetic number, because the mean of its divisors is an integer number (39242280000).

Almost surely, 2^{1311351003025} is an apocalyptic number.

It is an amenable number.

1311351003025 is a deficient number, since it is larger than the sum of its proper divisors (572278436975).

1311351003025 is a wasteful number, since it uses less digits than its factorization.

1311351003025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137758 (or 137753 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 25.

Adding to 1311351003025 its reverse (5203001531131), we get a palindrome (6514352534156).

The spelling of 1311351003025 in words is "one trillion, three hundred eleven billion, three hundred fifty-one million, three thousand, twenty-five".