2501540233505 has 4 divisors (see below), whose sum is σ = 3001848280212. Its totient is φ = 2001232186800.

The previous prime is 2501540233469. The next prime is 2501540233547. The reversal of 2501540233505 is 5053320451052.

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 1697139324049 + 804400909456 = 1302743^2 + 896884^2 .

It is not a de Polignac number, because 2501540233505 - 2⁶ = 2501540233441 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 250154023346 + ... + 250154023355.

It is an arithmetic number, because the mean of its divisors is an integer number (750462070053).

Almost surely, 2^{2501540233505} is an apocalyptic number.

It is an amenable number.

2501540233505 is a deficient number, since it is larger than the sum of its proper divisors (500308046707).

2501540233505 is an equidigital number, since it uses as much as digits as its factorization.

2501540233505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500308046706.

The product of its (nonzero) digits is 90000, while the sum is 35.

Adding to 2501540233505 its reverse (5053320451052), we get a palindrome (7554860684557).

The spelling of 2501540233505 in words is "two trillion, five hundred one billion, five hundred forty million, two hundred thirty-three thousand, five hundred five".