13021431425 has 24 divisors (see below), whose sum is σ = 16705835520. Its totient is φ = 10057881600.

The previous prime is 13021431361. The next prime is 13021431461. The reversal of 13021431425 is 52413412031.

It is a happy number.

It is not a de Polignac number, because 13021431425 - 2⁶ = 13021431361 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13021431394 and 13021431403.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 321089 + ... + 359361.

It is an arithmetic number, because the mean of its divisors is an integer number (696076480).

Almost surely, 2^13021431425 is an apocalyptic number.

It is an amenable number.

13021431425 is a deficient number, since it is larger than the sum of its proper divisors (3684404095).

13021431425 is a wasteful number, since it uses less digits than its factorization.

13021431425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38753 (or 38748 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 13021431425 its reverse (52413412031), we get a palindrome (65434843456).

The spelling of 13021431425 in words is "thirteen billion, twenty-one million, four hundred thirty-one thousand, four hundred twenty-five".