25696680 has 64 divisors (see below), whose sum is σ = 77552640. Its totient is φ = 6811392.

The previous prime is 25696669. The next prime is 25696691. The reversal of 25696680 is 8669652.

It is an interprime number because it is at equal distance from previous prime (25696669) and next prime (25696691).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23097 + ... + 24183.

It is an arithmetic number, because the mean of its divisors is an integer number (1211760).

Almost surely, 2^25696680 is an apocalyptic number.

25696680 is a gapful number since it is divisible by the number (20) 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 25696680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38776320).

25696680 is an abundant number, since it is smaller than the sum of its proper divisors (51855960).

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

25696680 is a wasteful number, since it uses less digits than its factorization.

25696680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1298 (or 1294 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 25696680 is about 5069.1892842939. The cubic root of 25696680 is about 295.0930664900.

The spelling of 25696680 in words is "twenty-five million, six hundred ninety-six thousand, six hundred eighty".