1311422535425 has 6 divisors (see below), whose sum is σ = 1626163943958. Its totient is φ = 1049138028320.

The previous prime is 1311422535421. The next prime is 1311422535427. The reversal of 1311422535425 is 5245352241131.

It can be written as a sum of positive squares in 3 ways, for example, as 17625483121 + 1293797052304 = 132761^2 + 1137452^2 .

It is not a de Polignac number, because 1311422535425 - 2² = 1311422535421 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1311422535421) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 26228450684 + ... + 26228450733.

It is an arithmetic number, because the mean of its divisors is an integer number (271027323993).

Almost surely, 2^{1311422535425} is an apocalyptic number.

It is an amenable number.

1311422535425 is a deficient number, since it is larger than the sum of its proper divisors (314741408533).

1311422535425 is an equidigital number, since it uses as much as digits as its factorization.

1311422535425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52456901427 (or 52456901422 counting only the distinct ones).

The product of its digits is 144000, while the sum is 38.

Adding to 1311422535425 its reverse (5245352241131), we get a palindrome (6556774776556).

The spelling of 1311422535425 in words is "one trillion, three hundred eleven billion, four hundred twenty-two million, five hundred thirty-five thousand, four hundred twenty-five".