25122 has 16 divisors (see below), whose sum is σ = 51840. Its totient is φ = 8112.

The previous prime is 25121. The next prime is 25127. The reversal of 25122 is 22152.

It is a super-2 number, since 2×25122² = 1262229768, which contains 22 as substring.

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 25098 and 25107.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 25122.

It is not an unprimeable number, because it can be changed into a prime (25121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 279 + ... + 357.

It is an arithmetic number, because the mean of its divisors is an integer number (3240).

2²⁵¹²² is an apocalyptic number.

It is a pronic number, being equal to 158×159.

25122 is an abundant number, since it is smaller than the sum of its proper divisors (26718).

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 (25920).

25122 is a wasteful number, since it uses less digits than its factorization.

25122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137.

The product of its digits is 40, while the sum is 12.

The square root of 25122 is about 158.4992113545. The cubic root of 25122 is about 29.2876642423.

Adding to 25122 its reverse (22152), we get a palindrome (47274).

The spelling of 25122 in words is "twenty-five thousand, one hundred twenty-two".