25380880 has 80 divisors (see below), whose sum is σ = 68638464. Its totient is φ = 8547840.

The previous prime is 25380863. The next prime is 25380899. The reversal of 25380880 is 8808352.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33789 + ... + 34531.

Almost surely, 2^25380880 is an apocalyptic number.

25380880 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 25380880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34319232).

25380880 is an abundant number, since it is smaller than the sum of its proper divisors (43257584).

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

25380880 is a wasteful number, since it uses less digits than its factorization.

25380880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 824 (or 818 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 25380880 is about 5037.9440250960. The cubic root of 25380880 is about 293.8792290915.

The spelling of 25380880 in words is "twenty-five million, three hundred eighty thousand, eight hundred eighty".