25993320 has 128 divisors (see below), whose sum is σ = 81959040. Its totient is φ = 6589440.

The previous prime is 25993249. The next prime is 25993321. The reversal of 25993320 is 2339952.

It is not an unprimeable number, because it can be changed into a prime (25993321) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 387927 + ... + 387993.

It is an arithmetic number, because the mean of its divisors is an integer number (640305).

Almost surely, 2^25993320 is an apocalyptic number.

25993320 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 25993320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40979520).

25993320 is an abundant number, since it is smaller than the sum of its proper divisors (55965720).

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

25993320 is a wasteful number, since it uses less digits than its factorization.

25993320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195 (or 191 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 33.

The square root of 25993320 is about 5098.3644436231. The cubic root of 25993320 is about 296.2242335474.

It can be divided in two parts, 25 and 993320, that added together give a triangular number (993345 = T₁₄₀₉).

The spelling of 25993320 in words is "twenty-five million, nine hundred ninety-three thousand, three hundred twenty".