25712320 has 56 divisors (see below), whose sum is σ = 64465200. Its totient is φ = 9741312.

The previous prime is 25712311. The next prime is 25712327. The reversal of 25712320 is 2321752.

It is a super-2 number, since 2×25712320² = 1322246799564800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25712291 and 25712300.

It is not an unprimeable number, because it can be changed into a prime (25712327) 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, 3966 + ... + 8194.

Almost surely, 2^25712320 is an apocalyptic number.

25712320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25712320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32232600).

25712320 is an abundant number, since it is smaller than the sum of its proper divisors (38752880).

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

25712320 is a wasteful number, since it uses less digits than its factorization.

25712320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4265 (or 4255 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 25712320 is about 5070.7317026244. The cubic root of 25712320 is about 295.1529227248.

The spelling of 25712320 in words is "twenty-five million, seven hundred twelve thousand, three hundred twenty".