25804066 has 4 divisors (see below), whose sum is σ = 38706102. Its totient is φ = 12902032.

The previous prime is 25804039. The next prime is 25804067. The reversal of 25804066 is 66040852.

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

It can be written as a sum of positive squares in only one way, i.e., 24059025 + 1745041 = 4905^2 + 1321^2 .

It is not an unprimeable number, because it can be changed into a prime (25804067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6451015 + ... + 6451018.

Almost surely, 2^25804066 is an apocalyptic number.

25804066 is a deficient number, since it is larger than the sum of its proper divisors (12902036).

25804066 is a wasteful number, since it uses less digits than its factorization.

25804066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12902035.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 25804066 is about 5079.7702703961. The cubic root of 25804066 is about 295.5035582192.

The spelling of 25804066 in words is "twenty-five million, eight hundred four thousand, sixty-six".