2500305345 has 24 divisors (see below), whose sum is σ = 4588797096. Its totient is φ = 1255054848.

The previous prime is 2500305317. The next prime is 2500305359. The reversal of 2500305345 is 5435030052.

It can be written as a sum of positive squares in 4 ways, for example, as 832726449 + 1667578896 = 28857^2 + 40836^2 .

It is not a de Polignac number, because 2500305345 - 2⁶ = 2500305281 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1633422 + ... + 1634951.

It is an arithmetic number, because the mean of its divisors is an integer number (191199879).

Almost surely, 2^2500305345 is an apocalyptic number.

It is an amenable number.

2500305345 is a deficient number, since it is larger than the sum of its proper divisors (2088491751).

2500305345 is a wasteful number, since it uses less digits than its factorization.

2500305345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3268401 (or 3268398 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 27.

The square root of 2500305345 is about 50003.0533567701. The cubic root of 2500305345 is about 1357.2640616378.

Adding to 2500305345 its reverse (5435030052), we get a palindrome (7935335397).

The spelling of 2500305345 in words is "two billion, five hundred million, three hundred five thousand, three hundred forty-five".