25871489 has 8 divisors (see below), whose sum is σ = 29607168. Its totient is φ = 22145760.

The previous prime is 25871471. The next prime is 25871497. The reversal of 25871489 is 98417852.

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

It is a de Polignac number, because none of the positive numbers 2^k-25871489 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25871449) 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, 4349 + ... + 8405.

It is an arithmetic number, because the mean of its divisors is an integer number (3700896).

Almost surely, 2^25871489 is an apocalyptic number.

It is an amenable number.

25871489 is a deficient number, since it is larger than the sum of its proper divisors (3735679).

25871489 is an equidigital number, since it uses as much as digits as its factorization.

25871489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4975.

The product of its digits is 161280, while the sum is 44.

The square root of 25871489 is about 5086.4023631640. The cubic root of 25871489 is about 295.7607064371.

The spelling of 25871489 in words is "twenty-five million, eight hundred seventy-one thousand, four hundred eighty-nine".