25740889 has 4 divisors (see below), whose sum is σ = 25777024. Its totient is φ = 25704756.

The previous prime is 25740859. The next prime is 25740899. The reversal of 25740889 is 98804752.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25740889 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (25740809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16977 + ... + 18430.

It is an arithmetic number, because the mean of its divisors is an integer number (6444256).

Almost surely, 2^25740889 is an apocalyptic number.

It is an amenable number.

25740889 is a deficient number, since it is larger than the sum of its proper divisors (36135).

25740889 is an equidigital number, since it uses as much as digits as its factorization.

25740889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36134.

The product of its (nonzero) digits is 161280, while the sum is 43.

The square root of 25740889 is about 5073.5479696165. The cubic root of 25740889 is about 295.2621972251.

The spelling of 25740889 in words is "twenty-five million, seven hundred forty thousand, eight hundred eighty-nine".