25740289 has 8 divisors (see below), whose sum is σ = 26936640. Its totient is φ = 24550416.

The previous prime is 25740263. The next prime is 25740293. The reversal of 25740289 is 98204752.

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

It is a cyclic number.

It is not a de Polignac number, because 25740289 - 2⁵ = 25740257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25740089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7722 + ... + 10540.

It is an arithmetic number, because the mean of its divisors is an integer number (3367080).

Almost surely, 2^25740289 is an apocalyptic number.

It is an amenable number.

25740289 is a deficient number, since it is larger than the sum of its proper divisors (1196351).

25740289 is a wasteful number, since it uses less digits than its factorization.

25740289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3239.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 25740289 is about 5073.4888390535. The cubic root of 25740289 is about 295.2599030969.

The spelling of 25740289 in words is "twenty-five million, seven hundred forty thousand, two hundred eighty-nine".