25682728158 has 20 divisors (see below), whose sum is σ = 57548335680. Its totient is φ = 8560909332.

The previous prime is 25682728157. The next prime is 25682728163. The reversal of 25682728158 is 85182728652.

25682728158 is a `hidden beast` number, since 2 + 568 + 2 + 7 + 28 + 1 + 58 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25682728151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 79267518 + ... + 79267841.

It is an arithmetic number, because the mean of its divisors is an integer number (2877416784).

Almost surely, 2^25682728158 is an apocalyptic number.

25682728158 is an abundant number, since it is smaller than the sum of its proper divisors (31865607522).

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

25682728158 is a wasteful number, since it uses less digits than its factorization.

25682728158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158535373 (or 158535364 counting only the distinct ones).

The product of its digits is 4300800, while the sum is 54.

The spelling of 25682728158 in words is "twenty-five billion, six hundred eighty-two million, seven hundred twenty-eight thousand, one hundred fifty-eight".