25481871 has 10 divisors (see below), whose sum is σ = 38065632. Its totient is φ = 16987860.

The previous prime is 25481821. The next prime is 25481873. The reversal of 25481871 is 17818452.

It is not a de Polignac number, because 25481871 - 2¹¹ = 25479823 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25481873) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 157215 + ... + 157376.

Almost surely, 2^25481871 is an apocalyptic number.

25481871 is a deficient number, since it is larger than the sum of its proper divisors (12583761).

25481871 is an equidigital number, since it uses as much as digits as its factorization.

25481871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314603 (or 314594 counting only the distinct ones).

The product of its digits is 17920, while the sum is 36.

The square root of 25481871 is about 5047.9571115452. The cubic root of 25481871 is about 294.2684969100.

The spelling of 25481871 in words is "twenty-five million, four hundred eighty-one thousand, eight hundred seventy-one".