2505116641 has 4 divisors (see below), whose sum is σ = 2505456900. Its totient is φ = 2504776384.

The previous prime is 2505116567. The next prime is 2505116681. The reversal of 2505116641 is 1466115052.

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 359481600 + 2145635041 = 18960^2 + 46321^2 .

It is a cyclic number.

It is not a de Polignac number, because 2505116641 - 2⁷ = 2505116513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2505116681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158836 + ... + 173893.

It is an arithmetic number, because the mean of its divisors is an integer number (626364225).

Almost surely, 2^2505116641 is an apocalyptic number.

It is an amenable number.

2505116641 is a deficient number, since it is larger than the sum of its proper divisors (340259).

2505116641 is an equidigital number, since it uses as much as digits as its factorization.

2505116641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340258.

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 2505116641 is about 50051.1402567414. The cubic root of 2505116641 is about 1358.1340907038.

The spelling of 2505116641 in words is "two billion, five hundred five million, one hundred sixteen thousand, six hundred forty-one".