25166980 has 12 divisors (see below), whose sum is σ = 52850700. Its totient is φ = 10066784.

The previous prime is 25166971. The next prime is 25167013. The reversal of 25166980 is 8966152.

It can be written as a sum of positive squares in 2 ways, for example, as 8667136 + 16499844 = 2944^2 + 4062^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 629155 + ... + 629194.

It is an arithmetic number, because the mean of its divisors is an integer number (4404225).

Almost surely, 2^25166980 is an apocalyptic number.

25166980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25166980 is an abundant number, since it is smaller than the sum of its proper divisors (27683720).

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

25166980 is a wasteful number, since it uses less digits than its factorization.

25166980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1258358 (or 1258356 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 25166980 is about 5016.6702104085. The cubic root of 25166980 is about 293.0513330911.

The spelling of 25166980 in words is "twenty-five million, one hundred sixty-six thousand, nine hundred eighty".