2500392665 has 4 divisors (see below), whose sum is σ = 3000471204. Its totient is φ = 2000314128.

The previous prime is 2500392659. The next prime is 2500392703. The reversal of 2500392665 is 5662930052.

2500392665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 1810332304 + 690060361 = 42548^2 + 26269^2 .

It is a cyclic number.

It is not a de Polignac number, because 2500392665 - 2⁸ = 2500392409 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, 250039262 + ... + 250039271.

It is an arithmetic number, because the mean of its divisors is an integer number (750117801).

Almost surely, 2^2500392665 is an apocalyptic number.

It is an amenable number.

2500392665 is a deficient number, since it is larger than the sum of its proper divisors (500078539).

2500392665 is an equidigital number, since it uses as much as digits as its factorization.

2500392665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500078538.

The product of its (nonzero) digits is 97200, while the sum is 38.

The square root of 2500392665 is about 50003.9264958263. The cubic root of 2500392665 is about 1357.2798616971.

The spelling of 2500392665 in words is "two billion, five hundred million, three hundred ninety-two thousand, six hundred sixty-five".