25043450013 has 12 divisors (see below), whose sum is σ = 36245795040. Its totient is φ = 16662438216.

The previous prime is 25043449999. The next prime is 25043450041. The reversal of 25043450013 is 31005434052.

It is not a de Polignac number, because 25043450013 - 2¹⁴ = 25043433629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25043450083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2761483 + ... + 2770536.

It is an arithmetic number, because the mean of its divisors is an integer number (3020482920).

Almost surely, 2^25043450013 is an apocalyptic number.

It is an amenable number.

25043450013 is a deficient number, since it is larger than the sum of its proper divisors (11202345027).

25043450013 is a wasteful number, since it uses less digits than its factorization.

25043450013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5532528 (or 5532525 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

Adding to 25043450013 its reverse (31005434052), we get a palindrome (56048884065).

The spelling of 25043450013 in words is "twenty-five billion, forty-three million, four hundred fifty thousand, thirteen".