25685982 has 24 divisors (see below), whose sum is σ = 63603696. Its totient is φ = 7338816.

The previous prime is 25685977. The next prime is 25685983. The reversal of 25685982 is 28958652.

25685982 is a `hidden beast` number, since 2 + 56 + 8 + 598 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25685983) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 101803 + ... + 102054.

It is an arithmetic number, because the mean of its divisors is an integer number (2650154).

Almost surely, 2^25685982 is an apocalyptic number.

25685982 is an abundant number, since it is smaller than the sum of its proper divisors (37917714).

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

25685982 is a wasteful number, since it uses less digits than its factorization.

25685982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203872 (or 203869 counting only the distinct ones).

The product of its digits is 345600, while the sum is 45.

The square root of 25685982 is about 5068.1339761297. The cubic root of 25685982 is about 295.0521099174.

The spelling of 25685982 in words is "twenty-five million, six hundred eighty-five thousand, nine hundred eighty-two".