25405135256056 has 16 divisors (see below), whose sum is σ = 47646165268800. Its totient is φ = 12699491184384.

The previous prime is 25405135255979. The next prime is 25405135256063. The reversal of 25405135256056 is 65065253150452.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 384520360 + ... + 384586423.

It is an arithmetic number, because the mean of its divisors is an integer number (2977885329300).

Almost surely, 2^{25405135256056} is an apocalyptic number.

It is an amenable number.

25405135256056 is a deficient number, since it is larger than the sum of its proper divisors (22241030012744).

25405135256056 is a wasteful number, since it uses less digits than its factorization.

25405135256056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 769110918 (or 769110914 counting only the distinct ones).

The product of its (nonzero) digits is 5400000, while the sum is 49.

The spelling of 25405135256056 in words is "twenty-five trillion, four hundred five billion, one hundred thirty-five million, two hundred fifty-six thousand, fifty-six".