25705285 has 8 divisors (see below), whose sum is σ = 30873600. Its totient is φ = 20546064.

The previous prime is 25705279. The next prime is 25705289. The reversal of 25705285 is 58250752.

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 25705285 - 2¹³ = 25697093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25705285.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25705289) 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 7 ways as a sum of consecutive naturals, for example, 9516 + ... + 11914.

It is an arithmetic number, because the mean of its divisors is an integer number (3859200).

Almost surely, 2^25705285 is an apocalyptic number.

It is an amenable number.

25705285 is a deficient number, since it is larger than the sum of its proper divisors (5168315).

25705285 is a wasteful number, since it uses less digits than its factorization.

25705285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4547.

The product of its (nonzero) digits is 28000, while the sum is 34.

The square root of 25705285 is about 5070.0379682996. The cubic root of 25705285 is about 295.1260019049.

The spelling of 25705285 in words is "twenty-five million, seven hundred five thousand, two hundred eighty-five".