25627971 has 16 divisors (see below), whose sum is σ = 34754720. Its totient is φ = 16796160.

The previous prime is 25627963. The next prime is 25627997. The reversal of 25627971 is 17972652.

It is not a de Polignac number, because 25627971 - 2³ = 25627963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25627951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58971 + ... + 59403.

It is an arithmetic number, because the mean of its divisors is an integer number (2172170).

Almost surely, 2^25627971 is an apocalyptic number.

25627971 is a deficient number, since it is larger than the sum of its proper divisors (9126749).

25627971 is a wasteful number, since it uses less digits than its factorization.

25627971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 726.

The product of its digits is 52920, while the sum is 39.

The square root of 25627971 is about 5062.4076287869. The cubic root of 25627971 is about 294.8298204515.

The spelling of 25627971 in words is "twenty-five million, six hundred twenty-seven thousand, nine hundred seventy-one".