525764271836681 has 2 divisors, whose sum is σ = 525764271836682. Its totient is φ = 525764271836680.

The previous prime is 525764271836429. The next prime is 525764271836743. The reversal of 525764271836681 is 186638172467525.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 516053002240000 + 9711269596681 = 22716800^2 + 3116291^2 .

It is a cyclic number.

It is not a de Polignac number, because 525764271836681 - 2³⁰ = 525763198094857 is a prime.

It is a super-2 number, since 2×525764271836681² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (525764271838681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262882135918340 + 262882135918341.

It is an arithmetic number, because the mean of its divisors is an integer number (262882135918341).

Almost surely, 2^{525764271836681} is an apocalyptic number.

It is an amenable number.

525764271836681 is a deficient number, since it is larger than the sum of its proper divisors (1).

525764271836681 is an equidigital number, since it uses as much as digits as its factorization.

525764271836681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 812851200, while the sum is 71.

The spelling of 525764271836681 in words is "five hundred twenty-five trillion, seven hundred sixty-four billion, two hundred seventy-one million, eight hundred thirty-six thousand, six hundred eighty-one".