25798171 has 4 divisors (see below), whose sum is σ = 29483632. Its totient is φ = 22112712.

The previous prime is 25798153. The next prime is 25798183. The reversal of 25798171 is 17189752.

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 25798171 - 2⁷ = 25798043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25798141) 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, 1842720 + ... + 1842733.

It is an arithmetic number, because the mean of its divisors is an integer number (7370908).

Almost surely, 2^25798171 is an apocalyptic number.

25798171 is a deficient number, since it is larger than the sum of its proper divisors (3685461).

25798171 is an equidigital number, since it uses as much as digits as its factorization.

25798171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3685460.

The product of its digits is 35280, while the sum is 40.

The square root of 25798171 is about 5079.1899944775. The cubic root of 25798171 is about 295.4810536761.

The spelling of 25798171 in words is "twenty-five million, seven hundred ninety-eight thousand, one hundred seventy-one".