25285285 has 8 divisors (see below), whose sum is σ = 30372120. Its totient is φ = 20208384.

The previous prime is 25285279. The next prime is 25285291. The reversal of 25285285 is 58258252.

It is an interprime number because it is at equal distance from previous prime (25285279) and next prime (25285291).

It can be written as a sum of positive squares in 4 ways, for example, as 1723969 + 23561316 = 1313^2 + 4854^2 .

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 25285285 - 2¹³ = 25277093 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 5401 + ... + 8929.

It is an arithmetic number, because the mean of its divisors is an integer number (3796515).

Almost surely, 2^25285285 is an apocalyptic number.

It is an amenable number.

25285285 is a deficient number, since it is larger than the sum of its proper divisors (5086835).

25285285 is a wasteful number, since it uses less digits than its factorization.

25285285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4967.

The product of its digits is 64000, while the sum is 37.

The square root of 25285285 is about 5028.4475735559. The cubic root of 25285285 is about 293.5098075772.

The spelling of 25285285 in words is "twenty-five million, two hundred eighty-five thousand, two hundred eighty-five".