25257678873 has 64 divisors (see below), whose sum is σ = 40878120960. Its totient is φ = 13560611328.

The previous prime is 25257678871. The next prime is 25257678907. The reversal of 25257678873 is 37887675252.

It is not a de Polignac number, because 25257678873 - 2¹ = 25257678871 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25257678871) 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 63 ways as a sum of consecutive naturals, for example, 9483340 + ... + 9486002.

It is an arithmetic number, because the mean of its divisors is an integer number (638720640).

Almost surely, 2^25257678873 is an apocalyptic number.

25257678873 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

25257678873 is a deficient number, since it is larger than the sum of its proper divisors (15620442087).

25257678873 is a wasteful number, since it uses less digits than its factorization.

25257678873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3038.

The product of its digits is 39513600, while the sum is 60.

The spelling of 25257678873 in words is "twenty-five billion, two hundred fifty-seven million, six hundred seventy-eight thousand, eight hundred seventy-three".