2506115815 has 16 divisors (see below), whose sum is σ = 3480468480. Its totient is φ = 1696724640.

The previous prime is 2506115791. The next prime is 2506115819. The reversal of 2506115815 is 5185116052.

It is not a de Polignac number, because 2506115815 - 2⁹ = 2506115303 is a prime.

It is a super-2 number, since 2×2506115815² = 12561232956386228450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2506115819) 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, 450421 + ... + 455950.

It is an arithmetic number, because the mean of its divisors is an integer number (217529280).

Almost surely, 2^2506115815 is an apocalyptic number.

2506115815 is a deficient number, since it is larger than the sum of its proper divisors (974352665).

2506115815 is an equidigital number, since it uses as much as digits as its factorization.

2506115815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 906462.

The product of its (nonzero) digits is 12000, while the sum is 34.

The square root of 2506115815 is about 50061.1207924873. The cubic root of 2506115815 is about 1358.3146321169.

The spelling of 2506115815 in words is "two billion, five hundred six million, one hundred fifteen thousand, eight hundred fifteen".