25680852 has 18 divisors (see below), whose sum is σ = 64915578. Its totient is φ = 8560272.

The previous prime is 25680841. The next prime is 25680859. The reversal of 25680852 is 25808652.

It can be written as a sum of positive squares in only one way, i.e., 16353936 + 9326916 = 4044^2 + 3054^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 713357 = 25680852 / (2 + 5 + 6 + 8 + 0 + 8 + 5 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25680859) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 356643 + ... + 356714.

It is an arithmetic number, because the mean of its divisors is an integer number (3606421).

Almost surely, 2^25680852 is an apocalyptic number.

It is an amenable number.

25680852 is an abundant number, since it is smaller than the sum of its proper divisors (39234726).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25680852 is a wasteful number, since it uses less digits than its factorization.

25680852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713367 (or 713362 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The square root of 25680852 is about 5067.6278474253. The cubic root of 25680852 is about 295.0324660237.

The spelling of 25680852 in words is "twenty-five million, six hundred eighty thousand, eight hundred fifty-two".