25766066 has 8 divisors (see below), whose sum is σ = 38678700. Its totient is φ = 12873168.

The previous prime is 25766063. The next prime is 25766093. The reversal of 25766066 is 66066752.

It can be written as a sum of positive squares in 2 ways, for example, as 24255625 + 1510441 = 4925^2 + 1229^2 .

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25766063) 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, 1061 + ... + 7256.

Almost surely, 2^25766066 is an apocalyptic number.

25766066 is a deficient number, since it is larger than the sum of its proper divisors (12912634).

25766066 is a wasteful number, since it uses less digits than its factorization.

25766066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9868.

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 25766066 is about 5076.0285657195. The cubic root of 25766066 is about 295.3584305499.

The spelling of 25766066 in words is "twenty-five million, seven hundred sixty-six thousand, sixty-six".