25049171 has 4 divisors (see below), whose sum is σ = 28627632. Its totient is φ = 21470712.

The previous prime is 25049161. The next prime is 25049173. The reversal of 25049171 is 17194052.

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 25049171 - 2⁶ = 25049107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25049173) 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, 1789220 + ... + 1789233.

It is an arithmetic number, because the mean of its divisors is an integer number (7156908).

Almost surely, 2^25049171 is an apocalyptic number.

25049171 is a deficient number, since it is larger than the sum of its proper divisors (3578461).

25049171 is an equidigital number, since it uses as much as digits as its factorization.

25049171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3578460.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 25049171 is about 5004.9146845875. The cubic root of 25049171 is about 292.5933507773.

The spelling of 25049171 in words is "twenty-five million, forty-nine thousand, one hundred seventy-one".