25882491 has 4 divisors (see below), whose sum is σ = 34509992. Its totient is φ = 17254992.

The previous prime is 25882487. The next prime is 25882501. The reversal of 25882491 is 19428852.

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

It is not a de Polignac number, because 25882491 - 2² = 25882487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25882481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4313746 + ... + 4313751.

It is an arithmetic number, because the mean of its divisors is an integer number (8627498).

Almost surely, 2^25882491 is an apocalyptic number.

25882491 is a deficient number, since it is larger than the sum of its proper divisors (8627501).

25882491 is an equidigital number, since it uses as much as digits as its factorization.

25882491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8627500.

The product of its digits is 46080, while the sum is 39.

The square root of 25882491 is about 5087.4837591878. The cubic root of 25882491 is about 295.8026251446.

The spelling of 25882491 in words is "twenty-five million, eight hundred eighty-two thousand, four hundred ninety-one".