28625973241 has 4 divisors (see below), whose sum is σ = 28661271184. Its totient is φ = 28590675300.

The previous prime is 28625973223. The next prime is 28625973251. The reversal of 28625973241 is 14237952682.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28625973241 - 2¹⁹ = 28625448953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28625973251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17647755 + ... + 17649376.

It is an arithmetic number, because the mean of its divisors is an integer number (7165317796).

Almost surely, 2^28625973241 is an apocalyptic number.

It is an amenable number.

28625973241 is a deficient number, since it is larger than the sum of its proper divisors (35297943).

28625973241 is an equidigital number, since it uses as much as digits as its factorization.

28625973241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35297942.

The product of its digits is 1451520, while the sum is 49.

The spelling of 28625973241 in words is "twenty-eight billion, six hundred twenty-five million, nine hundred seventy-three thousand, two hundred forty-one".