28519474325 has 6 divisors (see below), whose sum is σ = 35364148194. Its totient is φ = 22815579440.

The previous prime is 28519474309. The next prime is 28519474351. The reversal of 28519474325 is 52347491582.

It can be written as a sum of positive squares in 3 ways, for example, as 266570929 + 28252903396 = 16327^2 + 168086^2 .

It is not a de Polignac number, because 28519474325 - 2⁴ = 28519474309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 570389462 + ... + 570389511.

It is an arithmetic number, because the mean of its divisors is an integer number (5894024699).

Almost surely, 2^28519474325 is an apocalyptic number.

28519474325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28519474325 is a deficient number, since it is larger than the sum of its proper divisors (6844673869).

28519474325 is a wasteful number, since it uses less digits than its factorization.

28519474325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1140778983 (or 1140778978 counting only the distinct ones).

The product of its digits is 2419200, while the sum is 50.

The spelling of 28519474325 in words is "twenty-eight billion, five hundred nineteen million, four hundred seventy-four thousand, three hundred twenty-five".