25461871 has 4 divisors (see below), whose sum is σ = 25482744. Its totient is φ = 25441000.

The previous prime is 25461859. The next prime is 25461893. The reversal of 25461871 is 17816452.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25461871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25461071) 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 3 ways as a sum of consecutive naturals, for example, 8485 + ... + 11086.

It is an arithmetic number, because the mean of its divisors is an integer number (6370686).

Almost surely, 2^25461871 is an apocalyptic number.

25461871 is a deficient number, since it is larger than the sum of its proper divisors (20873).

25461871 is a wasteful number, since it uses less digits than its factorization.

25461871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20872.

The product of its digits is 13440, while the sum is 34.

The square root of 25461871 is about 5045.9757232868. The cubic root of 25461871 is about 294.1914890853.

The spelling of 25461871 in words is "twenty-five million, four hundred sixty-one thousand, eight hundred seventy-one".