2505623189 has 2 divisors, whose sum is σ = 2505623190. Its totient is φ = 2505623188.

The previous prime is 2505623161. The next prime is 2505623191. The reversal of 2505623189 is 9813265052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1783626289 + 721996900 = 42233^2 + 26870^2 .

It is a cyclic number.

It is not a de Polignac number, because 2505623189 - 2¹⁶ = 2505557653 is a prime.

Together with 2505623191, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2505623089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1252811594 + 1252811595.

It is an arithmetic number, because the mean of its divisors is an integer number (1252811595).

Almost surely, 2^2505623189 is an apocalyptic number.

It is an amenable number.

2505623189 is a deficient number, since it is larger than the sum of its proper divisors (1).

2505623189 is an equidigital number, since it uses as much as digits as its factorization.

2505623189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129600, while the sum is 41.

The square root of 2505623189 is about 50056.2003052569. The cubic root of 2505623189 is about 1358.2256251965.

The spelling of 2505623189 in words is "two billion, five hundred five million, six hundred twenty-three thousand, one hundred eighty-nine".