28694995125 has 32 divisors (see below), whose sum is σ = 48402606720. Its totient is φ = 15094339200.

The previous prime is 28694995123. The next prime is 28694995151. The reversal of 28694995125 is 52159949682.

It is not a de Polignac number, because 28694995125 - 2¹ = 28694995123 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28694995123) 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 31 ways as a sum of consecutive naturals, for example, 496735 + ... + 551484.

It is an arithmetic number, because the mean of its divisors is an integer number (1512581460).

Almost surely, 2^28694995125 is an apocalyptic number.

28694995125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28694995125 is a deficient number, since it is larger than the sum of its proper divisors (19707611595).

28694995125 is a wasteful number, since it uses less digits than its factorization.

28694995125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1048310 (or 1048300 counting only the distinct ones).

The product of its digits is 13996800, while the sum is 60.

It can be divided in two parts, 2869 and 4995125, that added together give a palindrome (4997994).

The spelling of 28694995125 in words is "twenty-eight billion, six hundred ninety-four million, nine hundred ninety-five thousand, one hundred twenty-five".