28739495925 has 144 divisors (see below), whose sum is σ = 62261729280. Its totient is φ = 12956993280.

The previous prime is 28739495899. The next prime is 28739495957. The reversal of 28739495925 is 52959493782.

28739495925 is a `hidden beast` number, since 2 + 8 + 7 + 39 + 4 + 9 + 592 + 5 = 666.

It is not a de Polignac number, because 28739495925 - 2⁷ = 28739495797 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

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 143 ways as a sum of consecutive naturals, for example, 2408524 + ... + 2420426.

It is an arithmetic number, because the mean of its divisors is an integer number (432373120).

Almost surely, 2^28739495925 is an apocalyptic number.

28739495925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28739495925 is an abundant number, since it is smaller than the sum of its proper divisors (33522233355).

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

28739495925 is a wasteful number, since it uses less digits than its factorization.

28739495925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12009 (or 11991 counting only the distinct ones).

The product of its digits is 48988800, while the sum is 63.

The spelling of 28739495925 in words is "twenty-eight billion, seven hundred thirty-nine million, four hundred ninety-five thousand, nine hundred twenty-five".