6538734839025 has 27 divisors (see below), whose sum is σ = 11711669323809. Its totient is φ = 3487304790720.

The previous prime is 6538734838981. The next prime is 6538734839041. The reversal of 6538734839025 is 5209384378356.

It is a happy number.

The square root of 6538734839025 is 2557095.

It is a perfect power (a square), and thus also a powerful number.

6538734839025 is a `hidden beast` number, since 6 + 53 + 87 + 3 + 483 + 9 + 0 + 25 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1572914797281 + 4965820041744 = 1254159^2 + 2228412^2 .

It is not a de Polignac number, because 6538734839025 - 2¹⁵ = 6538734806257 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 38271189 + ... + 38441661.

Almost surely, 2^{6538734839025} is an apocalyptic number.

6538734839025 is the 2557095-th square number.

6538734839025 is the 1278548-th centered octagonal number.

It is an amenable number.

6538734839025 is a deficient number, since it is larger than the sum of its proper divisors (5172934484784).

6538734839025 is an frugal number, since it uses more digits than its factorization.

6538734839025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340962 (or 170481 counting only the distinct ones).

The product of its (nonzero) digits is 130636800, while the sum is 63.

The spelling of 6538734839025 in words is "six trillion, five hundred thirty-eight billion, seven hundred thirty-four million, eight hundred thirty-nine thousand, twenty-five".