25687968 has 48 divisors (see below), whose sum is σ = 69763680. Its totient is φ = 8266496.

The previous prime is 25687967. The next prime is 25687973. The reversal of 25687968 is 86978652.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 25687968.

It is not an unprimeable number, because it can be changed into a prime (25687967) 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, 1830 + ... + 7397.

It is an arithmetic number, because the mean of its divisors is an integer number (1453410).

Almost surely, 2^25687968 is an apocalyptic number.

It is an amenable number.

25687968 is an abundant number, since it is smaller than the sum of its proper divisors (44075712).

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

25687968 is a wasteful number, since it uses less digits than its factorization.

25687968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9269 (or 9261 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 51.

The square root of 25687968 is about 5068.3299024432. The cubic root of 25687968 is about 295.0597140442.

The spelling of 25687968 in words is "twenty-five million, six hundred eighty-seven thousand, nine hundred sixty-eight".