25330320 has 120 divisors (see below), whose sum is σ = 88286016. Its totient is φ = 6749568.

The previous prime is 25330273. The next prime is 25330351. The reversal of 25330320 is 2303352.

It is a tau number, because it is divible by the number of its divisors (120).

It is a super-2 number, since 2×25330320² = 1283250222604800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 25330293 and 25330302.

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 23 ways as a sum of consecutive naturals, for example, 18789 + ... + 20091.

Almost surely, 2^25330320 is an apocalyptic number.

25330320 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 25330320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44143008).

25330320 is an abundant number, since it is smaller than the sum of its proper divisors (62955696).

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

25330320 is a wasteful number, since it uses less digits than its factorization.

25330320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1331 (or 1313 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 18.

The square root of 25330320 is about 5032.9236036324. The cubic root of 25330320 is about 293.6839585955.

Adding to 25330320 its reverse (2303352), we get a palindrome (27633672).

The spelling of 25330320 in words is "twenty-five million, three hundred thirty thousand, three hundred twenty".