525135332523481 has 2 divisors, whose sum is σ = 525135332523482. Its totient is φ = 525135332523480.

The previous prime is 525135332523479. The next prime is 525135332523521. The reversal of 525135332523481 is 184325233531525.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 511290831051081 + 13844501472400 = 22611741^2 + 3720820^2 .

It is a cyclic number.

It is not a de Polignac number, because 525135332523481 - 2¹ = 525135332523479 is a prime.

It is a super-2 number, since 2×525135332523481² (a number of 30 digits) contains 22 as substring.

Together with 525135332523479, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (525135332523881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262567666261740 + 262567666261741.

It is an arithmetic number, because the mean of its divisors is an integer number (262567666261741).

Almost surely, 2^{525135332523481} is an apocalyptic number.

It is an amenable number.

525135332523481 is a deficient number, since it is larger than the sum of its proper divisors (1).

525135332523481 is an equidigital number, since it uses as much as digits as its factorization.

525135332523481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960000, while the sum is 52.

The spelling of 525135332523481 in words is "five hundred twenty-five trillion, one hundred thirty-five billion, three hundred thirty-two million, five hundred twenty-three thousand, four hundred eighty-one".