25405135256055 has 8 divisors (see below), whose sum is σ = 40648216409712. Its totient is φ = 13549405469888.

The previous prime is 25405135255979. The next prime is 25405135256063. The reversal of 25405135256055 is 55065253150452.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25405135256055 - 2²¹ = 25405133158903 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25405135255995 and 25405135256013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 846837841854 + ... + 846837841883.

It is an arithmetic number, because the mean of its divisors is an integer number (5081027051214).

Almost surely, 2^{25405135256055} is an apocalyptic number.

25405135256055 is a deficient number, since it is larger than the sum of its proper divisors (15243081153657).

25405135256055 is a wasteful number, since it uses less digits than its factorization.

25405135256055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1693675683745.

The product of its (nonzero) digits is 4500000, while the sum is 48.

The spelling of 25405135256055 in words is "twenty-five trillion, four hundred five billion, one hundred thirty-five million, two hundred fifty-six thousand, fifty-five".