6475525081 has 2 divisors, whose sum is σ = 6475525082. Its totient is φ = 6475525080.

The previous prime is 6475525051. The next prime is 6475525103. The reversal of 6475525081 is 1805255746.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6473811600 + 1713481 = 80460^2 + 1309^2 .

It is a cyclic number.

It is not a de Polignac number, because 6475525081 - 2²⁵ = 6441970649 is a prime.

It is a super-2 number, since 2×6475525081² = 83864850149320113122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6475525031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3237762540 + 3237762541.

It is an arithmetic number, because the mean of its divisors is an integer number (3237762541).

Almost surely, 2^6475525081 is an apocalyptic number.

It is an amenable number.

6475525081 is a deficient number, since it is larger than the sum of its proper divisors (1).

6475525081 is an equidigital number, since it uses as much as digits as its factorization.

6475525081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336000, while the sum is 43.

The square root of 6475525081 is about 80470.6473255932. The cubic root of 6475525081 is about 1863.9102500005.

The spelling of 6475525081 in words is "six billion, four hundred seventy-five million, five hundred twenty-five thousand, eighty-one".