28825398251 has 8 divisors (see below), whose sum is σ = 31088196720. Its totient is φ = 26569094112.

The previous prime is 28825398197. The next prime is 28825398263. The reversal of 28825398251 is 15289352882.

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 28825398251 - 2¹⁸ = 28825136107 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28825398193 and 28825398202.

It is not an unprimeable number, because it can be changed into a prime (28825398751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1614356 + ... + 1632113.

It is an arithmetic number, because the mean of its divisors is an integer number (3886024590).

Almost surely, 2^28825398251 is an apocalyptic number.

28825398251 is a deficient number, since it is larger than the sum of its proper divisors (2262798469).

28825398251 is a wasteful number, since it uses less digits than its factorization.

28825398251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3247165.

The product of its digits is 2764800, while the sum is 53.

The spelling of 28825398251 in words is "twenty-eight billion, eight hundred twenty-five million, three hundred ninety-eight thousand, two hundred fifty-one".