25434350055 has 64 divisors (see below), whose sum is σ = 47372390400. Its totient is φ = 12931332480.

The previous prime is 25434350033. The next prime is 25434350069. The reversal of 25434350055 is 55005343452.

25434350055 is a `hidden beast` number, since 25 + 43 + 43 + 500 + 55 = 666.

It is not a de Polignac number, because 25434350055 - 2²⁰ = 25433301479 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 235041 + ... + 325749.

It is an arithmetic number, because the mean of its divisors is an integer number (740193600).

Almost surely, 2^25434350055 is an apocalyptic number.

25434350055 is a deficient number, since it is larger than the sum of its proper divisors (21938040345).

25434350055 is a wasteful number, since it uses less digits than its factorization.

25434350055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90821 (or 90815 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 36.

The spelling of 25434350055 in words is "twenty-five billion, four hundred thirty-four million, three hundred fifty thousand, fifty-five".