28730992425 has 12 divisors (see below), whose sum is σ = 47501907600. Its totient is φ = 15323195920.

The previous prime is 28730992369. The next prime is 28730992429. The reversal of 28730992425 is 52429903782.

It is not a de Polignac number, because 28730992425 - 2¹¹ = 28730990377 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28730992429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 191539875 + ... + 191540024.

It is an arithmetic number, because the mean of its divisors is an integer number (3958492300).

Almost surely, 2^28730992425 is an apocalyptic number.

28730992425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28730992425 is a deficient number, since it is larger than the sum of its proper divisors (18770915175).

28730992425 is a wasteful number, since it uses less digits than its factorization.

28730992425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383079912 (or 383079907 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 51.

The spelling of 28730992425 in words is "twenty-eight billion, seven hundred thirty million, nine hundred ninety-two thousand, four hundred twenty-five".