25220085 has 32 divisors (see below), whose sum is σ = 44247168. Its totient is φ = 12165120.

The previous prime is 25220077. The next prime is 25220099. The reversal of 25220085 is 58002252.

It is not a de Polignac number, because 25220085 - 2³ = 25220077 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 58029 + ... + 58461.

It is an arithmetic number, because the mean of its divisors is an integer number (1382724).

Almost surely, 2^25220085 is an apocalyptic number.

It is an amenable number.

25220085 is a deficient number, since it is larger than the sum of its proper divisors (19027083).

25220085 is a wasteful number, since it uses less digits than its factorization.

25220085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 25220085 is about 5021.9602746338. The cubic root of 25220085 is about 293.2573114232.

The spelling of 25220085 in words is "twenty-five million, two hundred twenty thousand, eighty-five".