25205085 has 12 divisors (see below), whose sum is σ = 43688892. Its totient is φ = 13442688.

The previous prime is 25205083. The next prime is 25205087. The reversal of 25205085 is 58050252.

It is an interprime number because it is at equal distance from previous prime (25205083) and next prime (25205087).

It can be written as a sum of positive squares in 2 ways, for example, as 4575321 + 20629764 = 2139^2 + 4542^2 .

It is not a de Polignac number, because 25205085 - 2¹ = 25205083 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25205083) 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 11 ways as a sum of consecutive naturals, for example, 280012 + ... + 280101.

It is an arithmetic number, because the mean of its divisors is an integer number (3640741).

Almost surely, 2^25205085 is an apocalyptic number.

It is an amenable number.

25205085 is a deficient number, since it is larger than the sum of its proper divisors (18483807).

25205085 is a wasteful number, since it uses less digits than its factorization.

25205085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560124 (or 560121 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 25205085 is about 5020.4666117802. The cubic root of 25205085 is about 293.1991602571.

The spelling of 25205085 in words is "twenty-five million, two hundred five thousand, eighty-five".