25555277775055 has 32 divisors (see below), whose sum is σ = 35300509009920. Its totient is φ = 17396991682560.

The previous prime is 25555277775023. The next prime is 25555277775067. The reversal of 25555277775055 is 55057777255552.

It is a happy number.

It is not a de Polignac number, because 25555277775055 - 2⁵ = 25555277775023 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 200768442 + ... + 200895688.

It is an arithmetic number, because the mean of its divisors is an integer number (1103140906560).

Almost surely, 2^{25555277775055} is an apocalyptic number.

25555277775055 is a deficient number, since it is larger than the sum of its proper divisors (9745231234865).

25555277775055 is a wasteful number, since it uses less digits than its factorization.

25555277775055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168679.

The product of its (nonzero) digits is 750312500, while the sum is 67.

The spelling of 25555277775055 in words is "twenty-five trillion, five hundred fifty-five billion, two hundred seventy-seven million, seven hundred seventy-five thousand, fifty-five".