25442312 has 32 divisors (see below), whose sum is σ = 55341120. Its totient is φ = 10739520.

The previous prime is 25442303. The next prime is 25442323. The reversal of 25442312 is 21324452.

It is a happy number.

It is a super-2 number, since 2×25442312² = 1294622479810688, which contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 362 + ... + 7142.

It is an arithmetic number, because the mean of its divisors is an integer number (1729410).

Almost surely, 2^25442312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25442312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27670560).

25442312 is an abundant number, since it is smaller than the sum of its proper divisors (29898808).

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

25442312 is a wasteful number, since it uses less digits than its factorization.

25442312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6861 (or 6857 counting only the distinct ones).

The product of its digits is 1920, while the sum is 23.

The square root of 25442312 is about 5044.0372718686. The cubic root of 25442312 is about 294.1161402715.

Adding to 25442312 its reverse (21324452), we get a palindrome (46766764).

The spelling of 25442312 in words is "twenty-five million, four hundred forty-two thousand, three hundred twelve".