25271140 has 48 divisors (see below), whose sum is σ = 56689920. Its totient is φ = 9434880.

The previous prime is 25271137. The next prime is 25271149. The reversal of 25271140 is 4117252.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (25271149) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 27285 + ... + 28195.

It is an arithmetic number, because the mean of its divisors is an integer number (1181040).

Almost surely, 2^25271140 is an apocalyptic number.

25271140 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 25271140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28344960).

25271140 is an abundant number, since it is smaller than the sum of its proper divisors (31418780).

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

25271140 is a wasteful number, since it uses less digits than its factorization.

25271140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1012 (or 1010 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 25271140 is about 5027.0408790858. The cubic root of 25271140 is about 293.4550659802.

Adding to 25271140 its reverse (4117252), we get a palindrome (29388392).

The spelling of 25271140 in words is "twenty-five million, two hundred seventy-one thousand, one hundred forty".