2625688189 has 4 divisors (see below), whose sum is σ = 2710387840. Its totient is φ = 2540988540.

The previous prime is 2625688183. The next prime is 2625688237. The reversal of 2625688189 is 9818865262.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9818865262 = 2 ⋅4909432631.

It is a cyclic number.

It is not a de Polignac number, because 2625688189 - 2³ = 2625688181 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 (2625688181) 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, 42349779 + ... + 42349840.

It is an arithmetic number, because the mean of its divisors is an integer number (677596960).

Almost surely, 2^2625688189 is an apocalyptic number.

It is an amenable number.

2625688189 is a deficient number, since it is larger than the sum of its proper divisors (84699651).

2625688189 is an equidigital number, since it uses as much as digits as its factorization.

2625688189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84699650.

The product of its digits is 3317760, while the sum is 55.

The square root of 2625688189 is about 51241.4694266275. The cubic root of 2625688189 is about 1379.5826275793.

The spelling of 2625688189 in words is "two billion, six hundred twenty-five million, six hundred eighty-eight thousand, one hundred eighty-nine".