1311142425 has 72 divisors (see below), whose sum is σ = 2321538912. Its totient is φ = 652800000.

The previous prime is 1311142387. The next prime is 1311142429. The reversal of 1311142425 is 5242411131.

It is not a de Polignac number, because 1311142425 - 2⁸ = 1311142169 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1311142395 and 1311142404.

It is not an unprimeable number, because it can be changed into a prime (1311142429) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 5223550 + ... + 5223800.

It is an arithmetic number, because the mean of its divisors is an integer number (32243596).

Almost surely, 2^1311142425 is an apocalyptic number.

1311142425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1311142425 is a deficient number, since it is larger than the sum of its proper divisors (1010396487).

1311142425 is a wasteful number, since it uses less digits than its factorization.

1311142425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539 (or 517 counting only the distinct ones).

The product of its digits is 960, while the sum is 24.

The square root of 1311142425 is about 36209.7007029884. The cubic root of 1311142425 is about 1094.5021610495.

Adding to 1311142425 its reverse (5242411131), we get a palindrome (6553553556).

The spelling of 1311142425 in words is "one billion, three hundred eleven million, one hundred forty-two thousand, four hundred twenty-five".