25616880 has 120 divisors (see below), whose sum is σ = 87976512. Its totient is φ = 6676992.

The previous prime is 25616867. The next prime is 25616887. The reversal of 25616880 is 8861652.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25616887) 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, 33462 + ... + 34218.

Almost surely, 2^25616880 is an apocalyptic number.

25616880 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 25616880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43988256).

25616880 is an abundant number, since it is smaller than the sum of its proper divisors (62359632).

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

25616880 is a wasteful number, since it uses less digits than its factorization.

25616880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823 (or 814 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 25616880 is about 5061.3120828497. The cubic root of 25616880 is about 294.7872832127.

The spelling of 25616880 in words is "twenty-five million, six hundred sixteen thousand, eight hundred eighty".