25855172343 has 96 divisors (see below), whose sum is σ = 51872970240. Its totient is φ = 11970443520.

The previous prime is 25855172333. The next prime is 25855172353. The reversal of 25855172343 is 34327155852.

25855172343 is a `hidden beast` number, since 2 + 58 + 551 + 7 + 2 + 3 + 43 = 666.

It is an interprime number because it is at equal distance from previous prime (25855172333) and next prime (25855172353).

It is not a de Polignac number, because 25855172343 - 2¹⁰ = 25855171319 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25855172323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 211780 + ... + 310742.

It is an arithmetic number, because the mean of its divisors is an integer number (540343440).

Almost surely, 2^25855172343 is an apocalyptic number.

25855172343 is an abundant number, since it is smaller than the sum of its proper divisors (26017797897).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25855172343 is a wasteful number, since it uses less digits than its factorization.

25855172343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99029 (or 99026 counting only the distinct ones).

The product of its digits is 1008000, while the sum is 45.

The spelling of 25855172343 in words is "twenty-five billion, eight hundred fifty-five million, one hundred seventy-two thousand, three hundred forty-three".