25687956 has 72 divisors (see below), whose sum is σ = 70795200. Its totient is φ = 7246512.

The previous prime is 25687927. The next prime is 25687957. The reversal of 25687956 is 65978652.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25687957) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 325125 + ... + 325203.

Almost surely, 2^25687956 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25687956, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35397600).

25687956 is an abundant number, since it is smaller than the sum of its proper divisors (45107244).

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

25687956 is an equidigital number, since it uses as much as digits as its factorization.

25687956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186 (or 91 counting only the distinct ones).

The product of its digits is 907200, while the sum is 48.

The square root of 25687956 is about 5068.3287186212. The cubic root of 25687956 is about 295.0596680990.

The spelling of 25687956 in words is "twenty-five million, six hundred eighty-seven thousand, nine hundred fifty-six".