25775880 has 192 divisors, whose sum is σ = 88542720. Its totient is φ = 5990400.

The previous prime is 25775857. The next prime is 25775887. The reversal of 25775880 is 8857752.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (25775887) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 628660 + ... + 628700.

It is an arithmetic number, because the mean of its divisors is an integer number (461160).

Almost surely, 2^25775880 is an apocalyptic number.

25775880 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 25775880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44271360).

25775880 is an abundant number, since it is smaller than the sum of its proper divisors (62766840).

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

25775880 is a wasteful number, since it uses less digits than its factorization.

25775880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112 (or 95 counting only the distinct ones).

The product of its (nonzero) digits is 156800, while the sum is 42.

The square root of 25775880 is about 5076.9951743132. The cubic root of 25775880 is about 295.3959253399.

The spelling of 25775880 in words is "twenty-five million, seven hundred seventy-five thousand, eight hundred eighty".