25580066 has 8 divisors (see below), whose sum is σ = 38400960. Its totient is φ = 12779748.

The previous prime is 25580063. The next prime is 25580077. The reversal of 25580066 is 66008552.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (25580063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1526 + ... + 7313.

It is an arithmetic number, because the mean of its divisors is an integer number (4800120).

Almost surely, 2^25580066 is an apocalyptic number.

25580066 is a deficient number, since it is larger than the sum of its proper divisors (12820894).

25580066 is a wasteful number, since it uses less digits than its factorization.

25580066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10288.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 25580066 is about 5057.6739713034. The cubic root of 25580066 is about 294.6460026481.

The spelling of 25580066 in words is "twenty-five million, five hundred eighty thousand, sixty-six".