25957271 has 4 divisors (see below), whose sum is σ = 27085872. Its totient is φ = 24828672.

The previous prime is 25957259. The next prime is 25957273. The reversal of 25957271 is 17275952.

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

It is a cyclic number.

It is not a de Polignac number, because 25957271 - 2²² = 21762967 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 (25957273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 564266 + ... + 564311.

It is an arithmetic number, because the mean of its divisors is an integer number (6771468).

Almost surely, 2^25957271 is an apocalyptic number.

25957271 is a deficient number, since it is larger than the sum of its proper divisors (1128601).

25957271 is a wasteful number, since it uses less digits than its factorization.

25957271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1128600.

The product of its digits is 44100, while the sum is 38.

The square root of 25957271 is about 5094.8278675535. The cubic root of 25957271 is about 296.0872300435.

The spelling of 25957271 in words is "twenty-five million, nine hundred fifty-seven thousand, two hundred seventy-one".