13424425452425 has 24 divisors (see below), whose sum is σ = 18411278566296. Its totient is φ = 9645491543040.

The previous prime is 13424425452409. The next prime is 13424425452443. The reversal of 13424425452425 is 52425452442431.

It can be written as a sum of positive squares in 12 ways, for example, as 7331861323081 + 6092564129344 = 2707741^2 + 2468312^2 .

It is not a de Polignac number, because 13424425452425 - 2⁴ = 13424425452409 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 13424425452425.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 558176144 + ... + 558200193.

It is an arithmetic number, because the mean of its divisors is an integer number (767136606929).

Almost surely, 2^{13424425452425} is an apocalyptic number.

It is an amenable number.

13424425452425 is a deficient number, since it is larger than the sum of its proper divisors (4986853113871).

13424425452425 is a wasteful number, since it uses less digits than its factorization.

13424425452425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1116376397 (or 1116376392 counting only the distinct ones).

The product of its digits is 6144000, while the sum is 47.

Adding to 13424425452425 its reverse (52425452442431), we get a palindrome (65849877894856).

The spelling of 13424425452425 in words is "thirteen trillion, four hundred twenty-four billion, four hundred twenty-five million, four hundred fifty-two thousand, four hundred twenty-five".