2543525405 has 16 divisors (see below), whose sum is σ = 3134651184. Its totient is φ = 1980126720.

The previous prime is 2543525401. The next prime is 2543525441. The reversal of 2543525405 is 5045253452.

It can be written as a sum of positive squares in 8 ways, for example, as 108201604 + 2435323801 = 10402^2 + 49349^2 .

It is not a de Polignac number, because 2543525405 - 2² = 2543525401 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 (2543525401) 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, 65759 + ... + 97011.

It is an arithmetic number, because the mean of its divisors is an integer number (195915699).

Almost surely, 2^2543525405 is an apocalyptic number.

It is an amenable number.

2543525405 is a deficient number, since it is larger than the sum of its proper divisors (591125779).

2543525405 is a wasteful number, since it uses less digits than its factorization.

2543525405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31696.

The product of its (nonzero) digits is 120000, while the sum is 35.

The square root of 2543525405 is about 50433.3759032647. The cubic root of 2543525405 is about 1365.0399439084.

Adding to 2543525405 its reverse (5045253452), we get a palindrome (7588778857).

The spelling of 2543525405 in words is "two billion, five hundred forty-three million, five hundred twenty-five thousand, four hundred five".