25880120 has 64 divisors (see below), whose sum is σ = 70476480. Its totient is φ = 8349696.

The previous prime is 25880117. The next prime is 25880123. The reversal of 25880120 is 2108852.

It is an interprime number because it is at equal distance from previous prime (25880117) and next prime (25880123).

It is a super-2 number, since 2×25880120² = 1339561222428800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25880120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25880123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2042 + ... + 7478.

It is an arithmetic number, because the mean of its divisors is an integer number (1101195).

Almost surely, 2^25880120 is an apocalyptic number.

25880120 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 25880120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35238240).

25880120 is an abundant number, since it is smaller than the sum of its proper divisors (44596360).

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

25880120 is a wasteful number, since it uses less digits than its factorization.

25880120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5472 (or 5468 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 26.

The square root of 25880120 is about 5087.2507309941. The cubic root of 25880120 is about 295.7935924046.

Adding to 25880120 its reverse (2108852), we get a palindrome (27988972).

The spelling of 25880120 in words is "twenty-five million, eight hundred eighty thousand, one hundred twenty".