13242543425 has 6 divisors (see below), whose sum is σ = 16420753878. Its totient is φ = 10594034720.

The previous prime is 13242543401. The next prime is 13242543427. The reversal of 13242543425 is 52434524231.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 1504121089 + 11738422336 = 38783^2 + 108344^2 .

It is not a de Polignac number, because 13242543425 - 2⁶ = 13242543361 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 (13242543427) 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, 264850844 + ... + 264850893.

It is an arithmetic number, because the mean of its divisors is an integer number (2736792313).

Almost surely, 2^13242543425 is an apocalyptic number.

It is an amenable number.

13242543425 is a deficient number, since it is larger than the sum of its proper divisors (3178210453).

13242543425 is an equidigital number, since it uses as much as digits as its factorization.

13242543425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529701747 (or 529701742 counting only the distinct ones).

The product of its digits is 115200, while the sum is 35.

The spelling of 13242543425 in words is "thirteen billion, two hundred forty-two million, five hundred forty-three thousand, four hundred twenty-five".