25982680 has 16 divisors (see below), whose sum is σ = 58461120. Its totient is φ = 10393056.

The previous prime is 25982669. The next prime is 25982683. The reversal of 25982680 is 8628952.

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 649567 = 25982680 / (2 + 5 + 9 + 8 + 2 + 6 + 8 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25982683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 324744 + ... + 324823.

It is an arithmetic number, because the mean of its divisors is an integer number (3653820).

Almost surely, 2^25982680 is an apocalyptic number.

25982680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25982680 is an abundant number, since it is smaller than the sum of its proper divisors (32478440).

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

25982680 is a wasteful number, since it uses less digits than its factorization.

25982680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649578 (or 649574 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 25982680 is about 5097.3208649250. The cubic root of 25982680 is about 296.1838096232.

It can be divided in two parts, 25982 and 680, that added together give a palindrome (26662).

The spelling of 25982680 in words is "twenty-five million, nine hundred eighty-two thousand, six hundred eighty".