2305728325 has 12 divisors (see below), whose sum is σ = 2905975588. Its totient is φ = 1814342400.

The previous prime is 2305728301. The next prime is 2305728329. The reversal of 2305728325 is 5238275032.

It is a happy number.

It is a Cunningham number, because it is equal to 48018²+1.

It can be written as a sum of positive squares in 6 ways, for example, as 24137569 + 2281590756 = 4913^2 + 47766^2 .

It is not a de Polignac number, because 2305728325 - 2⁹ = 2305727813 is a prime.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2305728329) 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 11 ways as a sum of consecutive naturals, for example, 754452 + ... + 757501.

Almost surely, 2^2305728325 is an apocalyptic number.

2305728325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2305728325 is a deficient number, since it is larger than the sum of its proper divisors (600247263).

2305728325 is a wasteful number, since it uses less digits than its factorization.

2305728325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1512024 (or 1512019 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 37.

The square root of 2305728325 is about 48018.0000104128. Note that the first 4 decimals coincide. The cubic root of 2305728325 is about 1321.1010718401.

The spelling of 2305728325 in words is "two billion, three hundred five million, seven hundred twenty-eight thousand, three hundred twenty-five".