25688934 has 16 divisors (see below), whose sum is σ = 57086640. Its totient is φ = 8562960.

The previous prime is 25688933. The next prime is 25688977. The reversal of 25688934 is 43988652.

25688934 is a `hidden beast` number, since 2 + 568 + 89 + 3 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 25688934.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25688933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 237807 + ... + 237914.

It is an arithmetic number, because the mean of its divisors is an integer number (3567915).

Almost surely, 2^25688934 is an apocalyptic number.

25688934 is an abundant number, since it is smaller than the sum of its proper divisors (31397706).

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

25688934 is a wasteful number, since it uses less digits than its factorization.

25688934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475732 (or 475726 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 25688934 is about 5068.4251992113. The cubic root of 25688934 is about 295.0634125865.

The spelling of 25688934 in words is "twenty-five million, six hundred eighty-eight thousand, nine hundred thirty-four".