2565162191 has 2 divisors, whose sum is σ = 2565162192. Its totient is φ = 2565162190.

The previous prime is 2565162167. The next prime is 2565162209. The reversal of 2565162191 is 1912615652.

2565162191 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2565162191 - 2¹⁰ = 2565161167 is a prime.

It is a super-2 number, since 2×2565162191² = 13160114132271840962, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2565162151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1282581095 + 1282581096.

It is an arithmetic number, because the mean of its divisors is an integer number (1282581096).

Almost surely, 2^2565162191 is an apocalyptic number.

2565162191 is a deficient number, since it is larger than the sum of its proper divisors (1).

2565162191 is an equidigital number, since it uses as much as digits as its factorization.

2565162191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32400, while the sum is 38.

The square root of 2565162191 is about 50647.4302507047. The cubic root of 2565162191 is about 1368.8996423176.

The spelling of 2565162191 in words is "two billion, five hundred sixty-five million, one hundred sixty-two thousand, one hundred ninety-one".