25146 has 24 divisors (see below), whose sum is σ = 59904. Its totient is φ = 7560.

The previous prime is 25127. The next prime is 25147. The reversal of 25146 is 64152.

It is a happy number.

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

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 25146.

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

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 135 + ... + 261.

It is an arithmetic number, because the mean of its divisors is an integer number (2496).

2²⁵¹⁴⁶ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25146, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29952).

25146 is an abundant number, since it is smaller than the sum of its proper divisors (34758).

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

25146 is a wasteful number, since it uses less digits than its factorization.

25146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146 (or 143 counting only the distinct ones).

The product of its digits is 240, while the sum is 18.

The square root of 25146 is about 158.5749034368. The cubic root of 25146 is about 29.2969878129.

Adding to 25146 its reverse (64152), we get a palindrome (89298).

It can be divided in two parts, 25 and 146, that added together give a palindrome (171).

The spelling of 25146 in words is "twenty-five thousand, one hundred forty-six".