13425352342421 has 4 divisors (see below), whose sum is σ = 13430533878144. Its totient is φ = 13420170806700.

The previous prime is 13425352342397. The next prime is 13425352342427. The reversal of 13425352342421 is 12424325352431.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13425352342421 - 2¹⁰ = 13425352341397 is a prime.

It is a super-2 number, since 2×13425352342421² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13425352342427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2590763975 + ... + 2590769156.

It is an arithmetic number, because the mean of its divisors is an integer number (3357633469536).

Almost surely, 2^{13425352342421} is an apocalyptic number.

It is an amenable number.

13425352342421 is a deficient number, since it is larger than the sum of its proper divisors (5181535723).

13425352342421 is an equidigital number, since it uses as much as digits as its factorization.

13425352342421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5181535722.

The product of its digits is 691200, while the sum is 41.

Adding to 13425352342421 its reverse (12424325352431), we get a palindrome (25849677694852).

The spelling of 13425352342421 in words is "thirteen trillion, four hundred twenty-five billion, three hundred fifty-two million, three hundred forty-two thousand, four hundred twenty-one".