25685756 has 24 divisors (see below), whose sum is σ = 47446560. Its totient is φ = 12142592.

The previous prime is 25685753. The next prime is 25685771. The reversal of 25685756 is 65758652.

It is a super-2 number, since 2×25685756² = 1319516122583072, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25685753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6620 + ... + 9756.

It is an arithmetic number, because the mean of its divisors is an integer number (1976940).

Almost surely, 2^25685756 is an apocalyptic number.

It is an amenable number.

25685756 is a deficient number, since it is larger than the sum of its proper divisors (21760804).

25685756 is a wasteful number, since it uses less digits than its factorization.

25685756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3253 (or 3251 counting only the distinct ones).

The product of its digits is 504000, while the sum is 44.

The square root of 25685756 is about 5068.1116799060. Note that the first 3 decimals coincide. The cubic root of 25685756 is about 295.0512445690.

The spelling of 25685756 in words is "twenty-five million, six hundred eighty-five thousand, seven hundred fifty-six".