25392 has 30 divisors (see below), whose sum is σ = 68572. Its totient is φ = 8096.

The previous prime is 25391. The next prime is 25409. The reversal of 25392 is 29352.

It is a Smith number, since the sum of its digits (21) coincides with the sum of the digits of its prime factors.

It is a plaindrome in base 15.

It is a nialpdrome in base 13 and base 16.

It is a zygodrome in base 2 and base 15.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 25392.

It is not an unprimeable number, because it can be changed into a prime (25391) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1093 + ... + 1115.

2²⁵³⁹² 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 25392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34286).

25392 is an abundant number, since it is smaller than the sum of its proper divisors (43180).

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

25392 is a wasteful number, since it uses less digits than its factorization.

25392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57 (or 28 counting only the distinct ones).

The product of its digits is 540, while the sum is 21.

The square root of 25392 is about 159.3486742963. The cubic root of 25392 is about 29.3922141445.

The spelling of 25392 in words is "twenty-five thousand, three hundred ninety-two".