2525165389 has 4 divisors (see below), whose sum is σ = 2525270620. Its totient is φ = 2525060160.

The previous prime is 2525165387. The next prime is 2525165393. The reversal of 2525165389 is 9835615252.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 648109764 + 1877055625 = 25458^2 + 43325^2 .

It is a cyclic number.

It is not a de Polignac number, because 2525165389 - 2¹ = 2525165387 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 (2525165387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2917 + ... + 71125.

It is an arithmetic number, because the mean of its divisors is an integer number (631317655).

Almost surely, 2^2525165389 is an apocalyptic number.

It is an amenable number.

2525165389 is a deficient number, since it is larger than the sum of its proper divisors (105231).

2525165389 is an equidigital number, since it uses as much as digits as its factorization.

2525165389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105230.

The product of its digits is 648000, while the sum is 46.

The square root of 2525165389 is about 50251.0237607156. The cubic root of 2525165389 is about 1361.7475712445.

The spelling of 2525165389 in words is "two billion, five hundred twenty-five million, one hundred sixty-five thousand, three hundred eighty-nine".