2505602345 has 4 divisors (see below), whose sum is σ = 3006722820. Its totient is φ = 2004481872.

The previous prime is 2505602329. The next prime is 2505602357. The reversal of 2505602345 is 5432065052.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1316456089 + 1189146256 = 36283^2 + 34484^2 .

It is a cyclic number.

It is not a de Polignac number, because 2505602345 - 2⁴ = 2505602329 is a prime.

It is a super-2 number, since 2×2505602345² = 12556086222538998050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 250560230 + ... + 250560239.

It is an arithmetic number, because the mean of its divisors is an integer number (751680705).

Almost surely, 2^2505602345 is an apocalyptic number.

It is an amenable number.

2505602345 is a deficient number, since it is larger than the sum of its proper divisors (501120475).

2505602345 is an equidigital number, since it uses as much as digits as its factorization.

2505602345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501120474.

The product of its (nonzero) digits is 36000, while the sum is 32.

The square root of 2505602345 is about 50055.9920988487. The cubic root of 2505602345 is about 1358.2218588768.

Adding to 2505602345 its reverse (5432065052), we get a palindrome (7937667397).

The spelling of 2505602345 in words is "two billion, five hundred five million, six hundred two thousand, three hundred forty-five".