2500664515 has 4 divisors (see below), whose sum is σ = 3000797424. Its totient is φ = 2000531608.

The previous prime is 2500664503. The next prime is 2500664531. The reversal of 2500664515 is 5154660052.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2500664515 - 2¹⁵ = 2500631747 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 250066447 + ... + 250066456.

It is an arithmetic number, because the mean of its divisors is an integer number (750199356).

Almost surely, 2^2500664515 is an apocalyptic number.

2500664515 is a deficient number, since it is larger than the sum of its proper divisors (500132909).

2500664515 is an equidigital number, since it uses as much as digits as its factorization.

2500664515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500132908.

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 2500664515 is about 50006.6447084785. The cubic root of 2500664515 is about 1357.3290490593.

The spelling of 2500664515 in words is "two billion, five hundred million, six hundred sixty-four thousand, five hundred fifteen".