28005025319 has 4 divisors (see below), whose sum is σ = 29478974040. Its totient is φ = 26531076600.

The previous prime is 28005025313. The next prime is 28005025387. The reversal of 28005025319 is 91352050082.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28005025319 - 2¹⁶ = 28004959783 is a prime.

It is a super-2 number, since 2×28005025319² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28005025313) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 736974332 + ... + 736974369.

It is an arithmetic number, because the mean of its divisors is an integer number (7369743510).

Almost surely, 2^28005025319 is an apocalyptic number.

28005025319 is a deficient number, since it is larger than the sum of its proper divisors (1473948721).

28005025319 is a wasteful number, since it uses less digits than its factorization.

28005025319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1473948720.

The product of its (nonzero) digits is 21600, while the sum is 35.

The spelling of 28005025319 in words is "twenty-eight billion, five million, twenty-five thousand, three hundred nineteen".