2678025517 has 4 divisors (see below), whose sum is σ = 2723415840. Its totient is φ = 2632635196.

The previous prime is 2678025491. The next prime is 2678025529. The reversal of 2678025517 is 7155208762.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2678025517 - 2¹⁵ = 2677992749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2678026517) 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, 22695073 + ... + 22695190.

It is an arithmetic number, because the mean of its divisors is an integer number (680853960).

Almost surely, 2^2678025517 is an apocalyptic number.

It is an amenable number.

2678025517 is a deficient number, since it is larger than the sum of its proper divisors (45390323).

2678025517 is an equidigital number, since it uses as much as digits as its factorization.

2678025517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45390322.

The product of its (nonzero) digits is 235200, while the sum is 43.

The square root of 2678025517 is about 51749.6426750949. The cubic root of 2678025517 is about 1388.6887064123.

The spelling of 2678025517 in words is "two billion, six hundred seventy-eight million, twenty-five thousand, five hundred seventeen".