25317385 has 8 divisors (see below), whose sum is σ = 30722760. Its totient is φ = 20025984.

The previous prime is 25317373. The next prime is 25317389. The reversal of 25317385 is 58371352.

It can be written as a sum of positive squares in 4 ways, for example, as 46656 + 25270729 = 216^2 + 5027^2 .

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 25317385 - 2⁵ = 25317353 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25317385.

It is not an unprimeable number, because it can be changed into a prime (25317389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28002 + ... + 28891.

It is an arithmetic number, because the mean of its divisors is an integer number (3840345).

Almost surely, 2^25317385 is an apocalyptic number.

It is an amenable number.

25317385 is a deficient number, since it is larger than the sum of its proper divisors (5405375).

25317385 is an equidigital number, since it uses as much as digits as its factorization.

25317385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56987.

The product of its digits is 25200, while the sum is 34.

The square root of 25317385 is about 5031.6384011572. The cubic root of 25317385 is about 293.6339599008.

The spelling of 25317385 in words is "twenty-five million, three hundred seventeen thousand, three hundred eighty-five".