28625273130305 has 8 divisors (see below), whose sum is σ = 34354440140712. Its totient is φ = 22897476914688.

The previous prime is 28625273130257. The next prime is 28625273130323. The reversal of 28625273130305 is 50303137252682.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2863598375089 + 25761674755216 = 1692217^2 + 5075596^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28625273130305 - 2⁶ = 28625273130241 is a prime.

It is a super-2 number, since 2×28625273130305² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28625273130305.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 342652754 + ... + 342736283.

It is an arithmetic number, because the mean of its divisors is an integer number (4294305017589).

Almost surely, 2^{28625273130305} is an apocalyptic number.

It is an amenable number.

28625273130305 is a deficient number, since it is larger than the sum of its proper divisors (5729167010407).

28625273130305 is an equidigital number, since it uses as much as digits as its factorization.

28625273130305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685397395.

The product of its (nonzero) digits is 1814400, while the sum is 47.

The spelling of 28625273130305 in words is "twenty-eight trillion, six hundred twenty-five billion, two hundred seventy-three million, one hundred thirty thousand, three hundred five".