25556636055 has 8 divisors (see below), whose sum is σ = 40890617712. Its totient is φ = 13630205888.

The previous prime is 25556636029. The next prime is 25556636069. The reversal of 25556636055 is 55063665552.

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 25556636055 - 2⁸ = 25556635799 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25556635995 and 25556636013.

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, 851887854 + ... + 851887883.

It is an arithmetic number, because the mean of its divisors is an integer number (5111327214).

Almost surely, 2^25556636055 is an apocalyptic number.

25556636055 is a deficient number, since it is larger than the sum of its proper divisors (15333981657).

25556636055 is a wasteful number, since it uses less digits than its factorization.

25556636055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1703775745.

The product of its (nonzero) digits is 4050000, while the sum is 48.

The spelling of 25556636055 in words is "twenty-five billion, five hundred fifty-six million, six hundred thirty-six thousand, fifty-five".