25655871 has 8 divisors (see below), whose sum is σ = 36008320. Its totient is φ = 16203672.

The previous prime is 25655849. The next prime is 25655887. The reversal of 25655871 is 17855652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25655871 - 2⁷ = 25655743 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 (25655831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 224995 + ... + 225108.

It is an arithmetic number, because the mean of its divisors is an integer number (4501040).

Almost surely, 2^25655871 is an apocalyptic number.

25655871 is a deficient number, since it is larger than the sum of its proper divisors (10352449).

25655871 is a wasteful number, since it uses less digits than its factorization.

25655871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450125.

The product of its digits is 84000, while the sum is 39.

The square root of 25655871 is about 5065.1624850542. The cubic root of 25655871 is about 294.9367708976.

The spelling of 25655871 in words is "twenty-five million, six hundred fifty-five thousand, eight hundred seventy-one".