725427171 has 28 divisors (see below), whose sum is σ = 1243029552. Its totient is φ = 414526896.

The previous prime is 725427169. The next prime is 725427181. The reversal of 725427171 is 171724527.

It is not a de Polignac number, because 725427171 - 2¹ = 725427169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (725427161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 65976 + ... + 76181.

Almost surely, 2^725427171 is an apocalyptic number.

725427171 is a deficient number, since it is larger than the sum of its proper divisors (517602381).

725427171 is an equidigital number, since it uses as much as digits as its factorization.

725427171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142182 (or 142167 counting only the distinct ones).

The product of its digits is 27440, while the sum is 36.

The square root of 725427171 is about 26933.7552339068. The cubic root of 725427171 is about 898.5272914584.

The spelling of 725427171 in words is "seven hundred twenty-five million, four hundred twenty-seven thousand, one hundred seventy-one".