25660085 has 8 divisors (see below), whose sum is σ = 33591456. Its totient is φ = 18661840.

The previous prime is 25660079. The next prime is 25660087. The reversal of 25660085 is 58006652.

It is a happy number.

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

It is not a de Polignac number, because 25660085 - 2¹⁰ = 25659061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25660087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 233219 + ... + 233328.

It is an arithmetic number, because the mean of its divisors is an integer number (4198932).

Almost surely, 2^25660085 is an apocalyptic number.

It is an amenable number.

25660085 is a deficient number, since it is larger than the sum of its proper divisors (7931371).

25660085 is a wasteful number, since it uses less digits than its factorization.

25660085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466563.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 25660085 is about 5065.5784467324. The cubic root of 25660085 is about 294.9529178907.

The spelling of 25660085 in words is "twenty-five million, six hundred sixty thousand, eighty-five".