25665960 has 64 divisors (see below), whose sum is σ = 81057600. Its totient is φ = 6483456.

The previous prime is 25665949. The next prime is 25665961. The reversal of 25665960 is 6956652.

It is not an unprimeable number, because it can be changed into a prime (25665961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3349 + ... + 7908.

It is an arithmetic number, because the mean of its divisors is an integer number (1266525).

Almost surely, 2^25665960 is an apocalyptic number.

25665960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25665960 is an abundant number, since it is smaller than the sum of its proper divisors (55391640).

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

25665960 is a wasteful number, since it uses less digits than its factorization.

25665960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11290 (or 11286 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 39.

The square root of 25665960 is about 5066.1583078305. The cubic root of 25665960 is about 294.9754264698.

The spelling of 25665960 in words is "twenty-five million, six hundred sixty-five thousand, nine hundred sixty".