25155120 has 80 divisors (see below), whose sum is σ = 78468192. Its totient is φ = 6666240.

The previous prime is 25155113. The next prime is 25155149. The reversal of 25155120 is 2155152.

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

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, 67254 + ... + 67626.

Almost surely, 2^25155120 is an apocalyptic number.

25155120 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 25155120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39234096).

25155120 is an abundant number, since it is smaller than the sum of its proper divisors (53313072).

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

25155120 is a wasteful number, since it uses less digits than its factorization.

25155120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670 (or 664 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 25155120 is about 5015.4880121480. The cubic root of 25155120 is about 293.0052921423.

The spelling of 25155120 in words is "twenty-five million, one hundred fifty-five thousand, one hundred twenty".