725725310171 has 2 divisors, whose sum is σ = 725725310172. Its totient is φ = 725725310170.

The previous prime is 725725310137. The next prime is 725725310173. The reversal of 725725310171 is 171013527527.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 725725310171 - 2¹⁰ = 725725309147 is a prime.

Together with 725725310173, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (725725310173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362862655085 + 362862655086.

It is an arithmetic number, because the mean of its divisors is an integer number (362862655086).

Almost surely, 2^725725310171 is an apocalyptic number.

725725310171 is a deficient number, since it is larger than the sum of its proper divisors (1).

725725310171 is an equidigital number, since it uses as much as digits as its factorization.

725725310171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 102900, while the sum is 41.

Adding to 725725310171 its reverse (171013527527), we get a palindrome (896738837698).

The spelling of 725725310171 in words is "seven hundred twenty-five billion, seven hundred twenty-five million, three hundred ten thousand, one hundred seventy-one".