25392768 has 64 divisors (see below), whose sum is σ = 68299200. Its totient is φ = 8357888.

The previous prime is 25392739. The next prime is 25392769. The reversal of 25392768 is 86729352.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (25392769) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33805 + ... + 34547.

It is an arithmetic number, because the mean of its divisors is an integer number (1067175).

Almost surely, 2^25392768 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 25392768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34149600).

25392768 is an abundant number, since it is smaller than the sum of its proper divisors (42906432).

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

25392768 is an equidigital number, since it uses as much as digits as its factorization.

25392768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 849 (or 837 counting only the distinct ones).

The product of its digits is 181440, while the sum is 42.

The square root of 25392768 is about 5039.1237333489. The cubic root of 25392768 is about 293.9251047134.

It can be divided in two parts, 25392 and 768, that multiplied together give a square (19501056 = 4416²).

The spelling of 25392768 in words is "twenty-five million, three hundred ninety-two thousand, seven hundred sixty-eight".