25780160 has 112 divisors (see below), whose sum is σ = 74395584. Its totient is φ = 8306688.

The previous prime is 25780151. The next prime is 25780187. The reversal of 25780160 is 6108752.

It is a tau number, because it is divible by the number of its divisors (112).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37742 + ... + 38418.

Almost surely, 2^25780160 is an apocalyptic number.

25780160 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 25780160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37197792).

25780160 is an abundant number, since it is smaller than the sum of its proper divisors (48615424).

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

25780160 is a wasteful number, since it uses less digits than its factorization.

25780160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718 (or 708 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 25780160 is about 5077.4166659828. The cubic root of 25780160 is about 295.4122742752.

The spelling of 25780160 in words is "twenty-five million, seven hundred eighty thousand, one hundred sixty".