28634367825 has 72 divisors (see below), whose sum is σ = 59002759296. Its totient is φ = 13003200000.

The previous prime is 28634367743. The next prime is 28634367847. The reversal of 28634367825 is 52876343682.

It is not a de Polignac number, because 28634367825 - 2¹⁵ = 28634335057 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 177625 + ... + 298025.

It is an arithmetic number, because the mean of its divisors is an integer number (819482768).

Almost surely, 2^28634367825 is an apocalyptic number.

28634367825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28634367825 is an abundant number, since it is smaller than the sum of its proper divisors (30368391471).

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

28634367825 is a wasteful number, since it uses less digits than its factorization.

28634367825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120575 (or 120567 counting only the distinct ones).

The product of its digits is 11612160, while the sum is 54.

The spelling of 28634367825 in words is "twenty-eight billion, six hundred thirty-four million, three hundred sixty-seven thousand, eight hundred twenty-five".