25055217105 has 32 divisors (see below), whose sum is σ = 40836047616. Its totient is φ = 13115848704.

The previous prime is 25055217101. The next prime is 25055217107. The reversal of 25055217105 is 50171255052.

It is not a de Polignac number, because 25055217105 - 2² = 25055217101 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25055217101) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 102829 + ... + 246341.

It is an arithmetic number, because the mean of its divisors is an integer number (1276126488).

Almost surely, 2^25055217105 is an apocalyptic number.

It is an amenable number.

25055217105 is a deficient number, since it is larger than the sum of its proper divisors (15780830511).

25055217105 is a wasteful number, since it uses less digits than its factorization.

25055217105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143737.

The product of its (nonzero) digits is 17500, while the sum is 33.

The spelling of 25055217105 in words is "twenty-five billion, fifty-five million, two hundred seventeen thousand, one hundred five".