6525965389 has 8 divisors (see below), whose sum is σ = 6910618680. Its totient is φ = 6141398016.

The previous prime is 6525965371. The next prime is 6525965399. The reversal of 6525965389 is 9835695256.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2123642889 + 4402322500 = 46083^2 + 66350^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6525965389 - 2⁵ = 6525965357 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 (6525965399) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 200587 + ... + 230839.

It is an arithmetic number, because the mean of its divisors is an integer number (863827335).

Almost surely, 2^6525965389 is an apocalyptic number.

It is an amenable number.

6525965389 is a deficient number, since it is larger than the sum of its proper divisors (384653291).

6525965389 is a wasteful number, since it uses less digits than its factorization.

6525965389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42959.

The product of its digits is 17496000, while the sum is 58.

The square root of 6525965389 is about 80783.4474939019. The cubic root of 6525965389 is about 1868.7373050834.

The spelling of 6525965389 in words is "six billion, five hundred twenty-five million, nine hundred sixty-five thousand, three hundred eighty-nine".