25302985 has 4 divisors (see below), whose sum is σ = 30363588. Its totient is φ = 20242384.

The previous prime is 25302973. The next prime is 25302997. The reversal of 25302985 is 58920352.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (25302973) and next prime (25302997).

It can be written as a sum of positive squares in 2 ways, for example, as 9834496 + 15468489 = 3136^2 + 3933^2 .

It is a cyclic number.

It is not a de Polignac number, because 25302985 - 2¹¹ = 25300937 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25302985.

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 3 ways as a sum of consecutive naturals, for example, 2530294 + ... + 2530303.

It is an arithmetic number, because the mean of its divisors is an integer number (7590897).

Almost surely, 2^25302985 is an apocalyptic number.

It is an amenable number.

25302985 is a deficient number, since it is larger than the sum of its proper divisors (5060603).

25302985 is an equidigital number, since it uses as much as digits as its factorization.

25302985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5060602.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 25302985 is about 5030.2072521915. The cubic root of 25302985 is about 293.5782783874.

The spelling of 25302985 in words is "twenty-five million, three hundred two thousand, nine hundred eighty-five".