25445133439 has 12 divisors (see below), whose sum is σ = 28051655632. Its totient is φ = 23063261760.

The previous prime is 25445133409. The next prime is 25445133449. The reversal of 25445133439 is 93433154452.

It is not a de Polignac number, because 25445133439 - 2⁵ = 25445133407 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25445133395 and 25445133404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25445133409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 271227 + ... + 352780.

Almost surely, 2^25445133439 is an apocalyptic number.

25445133439 is a deficient number, since it is larger than the sum of its proper divisors (2606522193).

25445133439 is a wasteful number, since it uses less digits than its factorization.

25445133439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624366 (or 624355 counting only the distinct ones).

The product of its digits is 777600, while the sum is 43.

The spelling of 25445133439 in words is "twenty-five billion, four hundred forty-five million, one hundred thirty-three thousand, four hundred thirty-nine".