25665316 has 6 divisors (see below), whose sum is σ = 44914310. Its totient is φ = 12832656.

The previous prime is 25665259. The next prime is 25665317. The reversal of 25665316 is 61356652.

It can be written as a sum of positive squares in only one way, i.e., 16080100 + 9585216 = 4010^2 + 3096^2 .

It is not an unprimeable number, because it can be changed into a prime (25665317) by changing a digit.

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 as a sum of consecutive naturals, namely, 3208161 + ... + 3208168.

Almost surely, 2^25665316 is an apocalyptic number.

It is an amenable number.

25665316 is a deficient number, since it is larger than the sum of its proper divisors (19248994).

25665316 is a wasteful number, since it uses less digits than its factorization.

25665316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6416333 (or 6416331 counting only the distinct ones).

The product of its digits is 32400, while the sum is 34.

The square root of 25665316 is about 5066.0947484231. The cubic root of 25665316 is about 294.9729593140.

The spelling of 25665316 in words is "twenty-five million, six hundred sixty-five thousand, three hundred sixteen".