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25144 = 237449

25144 has 16 divisors (see below), whose sum is σ = 54000. Its totient is φ = 10752.

The previous prime is 25127. The next prime is 25147. The reversal of 25144 is 44152.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169 + ... + 280.

It is an arithmetic number, because the mean of its divisors is an integer number (3375).

225144 is an apocalyptic number.

It is an amenable number.

25144 is an abundant number, since it is smaller than the sum of its proper divisors (28856).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27000).

25144 is a wasteful number, since it uses less digits than its factorization.

25144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462 (or 458 counting only the distinct ones).

The product of its digits is 160, while the sum is 16.

The square root of 25144 is about 158.5685971433. The cubic root of 25144 is about 29.2962110753.

Adding to 25144 its reverse (44152), we get a palindrome (69296).

It can be divided in two parts, 25 and 144, that multiplied together give a square (3600 = 602).

The spelling of 25144 in words is "twenty-five thousand, one hundred forty-four".

Divisors: 1 2 4 7 8 14 28 56 449 898 1796 3143 3592 6286 12572 25144