25331130 has 80 divisors (see below), whose sum is σ = 74330784. Its totient is φ = 6138720.

The previous prime is 25331129. The next prime is 25331143. The reversal of 25331130 is 3113352.

25331130 is a `hidden beast` number, since 2 + 533 + 1 + 130 = 666.

It is a super-2 number, since 2×25331130² = 1283332294153800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 7489 + ... + 10331.

Almost surely, 2^25331130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25331130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37165392).

25331130 is an abundant number, since it is smaller than the sum of its proper divisors (48999654).

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

25331130 is a wasteful number, since it uses less digits than its factorization.

25331130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2873 (or 2864 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 18.

The square root of 25331130 is about 5033.0040731158. The cubic root of 25331130 is about 293.6870889873.

Adding to 25331130 its reverse (3113352), we get a palindrome (28444482).

It can be divided in two parts, 2533 and 1130, that added together give a palindrome (3663).

The spelling of 25331130 in words is "twenty-five million, three hundred thirty-one thousand, one hundred thirty".