25984880 has 20 divisors (see below), whose sum is σ = 60415032. Its totient is φ = 10393920.

The previous prime is 25984879. The next prime is 25984883. The reversal of 25984880 is 8848952.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×25984880² = 1350427977228800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25984883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162326 + ... + 162485.

Almost surely, 2^25984880 is an apocalyptic number.

25984880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25984880 is an abundant number, since it is smaller than the sum of its proper divisors (34430152).

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

25984880 is a wasteful number, since it uses less digits than its factorization.

25984880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324824 (or 324818 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 44.

The square root of 25984880 is about 5097.5366599957. The cubic root of 25984880 is about 296.1921688583.

The spelling of 25984880 in words is "twenty-five million, nine hundred eighty-four thousand, eight hundred eighty".