25408066 has 8 divisors (see below), whose sum is σ = 38152764. Its totient is φ = 12690480.

The previous prime is 25408063. The next prime is 25408067. The reversal of 25408066 is 66080452.

It can be written as a sum of positive squares in 2 ways, for example, as 24710841 + 697225 = 4971^2 + 835^2 .

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 (25408063) 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, 4245 + ... + 8296.

Almost surely, 2^25408066 is an apocalyptic number.

25408066 is a deficient number, since it is larger than the sum of its proper divisors (12744698).

25408066 is a wasteful number, since it uses less digits than its factorization.

25408066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13556.

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

The square root of 25408066 is about 5040.6414274376. The cubic root of 25408066 is about 293.9841184134.

The spelling of 25408066 in words is "twenty-five million, four hundred eight thousand, sixty-six".