25656312 has 64 divisors (see below), whose sum is σ = 70531200. Its totient is φ = 7712640.

The previous prime is 25656307. The next prime is 25656317. The reversal of 25656312 is 21365652.

It is an interprime number because it is at equal distance from previous prime (25656307) and next prime (25656317).

It is a self number, because there is not a number n which added to its sum of digits gives 25656312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25656317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41139 + ... + 41757.

It is an arithmetic number, because the mean of its divisors is an integer number (1102050).

Almost surely, 2^25656312 is an apocalyptic number.

25656312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25656312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35265600).

25656312 is an abundant number, since it is smaller than the sum of its proper divisors (44874888).

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

25656312 is a wasteful number, since it uses less digits than its factorization.

25656312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796 (or 792 counting only the distinct ones).

The product of its digits is 10800, while the sum is 30.

The square root of 25656312 is about 5065.2060175278. The cubic root of 25656312 is about 294.9384607820.

The spelling of 25656312 in words is "twenty-five million, six hundred fifty-six thousand, three hundred twelve".