25709585 has 8 divisors (see below), whose sum is σ = 33656256. Its totient is φ = 18697840.

The previous prime is 25709549. The next prime is 25709587. The reversal of 25709585 is 58590752.

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

It is not a de Polignac number, because 25709585 - 2¹⁰ = 25708561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25709587) 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, 233669 + ... + 233778.

It is an arithmetic number, because the mean of its divisors is an integer number (4207032).

Almost surely, 2^25709585 is an apocalyptic number.

It is an amenable number.

25709585 is a deficient number, since it is larger than the sum of its proper divisors (7946671).

25709585 is a wasteful number, since it uses less digits than its factorization.

25709585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467463.

The product of its (nonzero) digits is 126000, while the sum is 41.

The square root of 25709585 is about 5070.4620105075. The cubic root of 25709585 is about 295.1424572895.

The spelling of 25709585 in words is "twenty-five million, seven hundred nine thousand, five hundred eighty-five".