2505533605 has 16 divisors (see below), whose sum is σ = 3025346544. Its totient is φ = 1991992320.

The previous prime is 2505533603. The next prime is 2505533609. The reversal of 2505533605 is 5063355052.

2505533605 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 61121124 + 2444412481 = 7818^2 + 49441^2 .

It is not a de Polignac number, because 2505533605 - 2¹ = 2505533603 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2505533603) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 669319 + ... + 673051.

It is an arithmetic number, because the mean of its divisors is an integer number (189084159).

Almost surely, 2^2505533605 is an apocalyptic number.

It is an amenable number.

2505533605 is a deficient number, since it is larger than the sum of its proper divisors (519812939).

2505533605 is a wasteful number, since it uses less digits than its factorization.

2505533605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4536.

The product of its (nonzero) digits is 67500, while the sum is 34.

The square root of 2505533605 is about 50055.3054630576. The cubic root of 2505533605 is about 1358.2094380412.

Adding to 2505533605 its reverse (5063355052), we get a palindrome (7568888657).

The spelling of 2505533605 in words is "two billion, five hundred five million, five hundred thirty-three thousand, six hundred five".