25366660 has 24 divisors (see below), whose sum is σ = 58113216. Its totient is φ = 9224160.

The previous prime is 25366643. The next prime is 25366661. The reversal of 25366660 is 6666352.

It is not an unprimeable number, because it can be changed into a prime (25366661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57432 + ... + 57871.

It is an arithmetic number, because the mean of its divisors is an integer number (2421384).

Almost surely, 2^25366660 is an apocalyptic number.

25366660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25366660 is an abundant number, since it is smaller than the sum of its proper divisors (32746556).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25366660 is a wasteful number, since it uses less digits than its factorization.

25366660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115323 (or 115321 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 34.

The square root of 25366660 is about 5036.5325373713. The cubic root of 25366660 is about 293.8243354954.

The spelling of 25366660 in words is "twenty-five million, three hundred sixty-six thousand, six hundred sixty".