25131120 has 120 divisors (see below), whose sum is σ = 90668304. Its totient is φ = 5741568.

The previous prime is 25131107. The next prime is 25131131. The reversal of 25131120 is 2113152.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 25131120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10692 + ... + 12828.

Almost surely, 2^25131120 is an apocalyptic number.

25131120 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 25131120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45334152).

25131120 is an abundant number, since it is smaller than the sum of its proper divisors (65537184).

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

25131120 is a wasteful number, since it uses less digits than its factorization.

25131120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2167 (or 2154 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 25131120 is about 5013.0948524838. The cubic root of 25131120 is about 292.9120789833.

Adding to 25131120 its reverse (2113152), we get a palindrome (27244272).

The spelling of 25131120 in words is "twenty-five million, one hundred thirty-one thousand, one hundred twenty".