25852865 has 8 divisors (see below), whose sum is σ = 31055400. Its totient is φ = 20660992.

The previous prime is 25852831. The next prime is 25852889. The reversal of 25852865 is 56825852.

It can be written as a sum of positive squares in 4 ways, for example, as 1803649 + 24049216 = 1343^2 + 4904^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25852865 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 4361 + ... + 8409.

It is an arithmetic number, because the mean of its divisors is an integer number (3881925).

Almost surely, 2^25852865 is an apocalyptic number.

It is an amenable number.

25852865 is a deficient number, since it is larger than the sum of its proper divisors (5202535).

25852865 is a wasteful number, since it uses less digits than its factorization.

25852865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5331.

The product of its digits is 192000, while the sum is 41.

The square root of 25852865 is about 5084.5712700286. The cubic root of 25852865 is about 295.6897200621.

The spelling of 25852865 in words is "twenty-five million, eight hundred fifty-two thousand, eight hundred sixty-five".