25280000305 has 8 divisors (see below), whose sum is σ = 34669714752. Its totient is φ = 17334857328.

The previous prime is 25280000299. The next prime is 25280000323. The reversal of 25280000305 is 50300008252.

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 25280000305 - 2¹³ = 25279992113 is a prime.

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 25280000305.

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 7 ways as a sum of consecutive naturals, for example, 361142827 + ... + 361142896.

It is an arithmetic number, because the mean of its divisors is an integer number (4333714344).

Almost surely, 2^25280000305 is an apocalyptic number.

It is an amenable number.

25280000305 is a deficient number, since it is larger than the sum of its proper divisors (9389714447).

25280000305 is an equidigital number, since it uses as much as digits as its factorization.

25280000305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722285735.

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 25280000305 its reverse (50300008252), we get a palindrome (75580008557).

The spelling of 25280000305 in words is "twenty-five billion, two hundred eighty million, three hundred five", and thus it is an aban number.