25730208 has 72 divisors (see below), whose sum is σ = 83629728. Its totient is φ = 7350912.

The previous prime is 25730203. The next prime is 25730209. The reversal of 25730208 is 80203752.

It is a tau number, because it is divible by the number of its divisors (72).

It is not an unprimeable number, because it can be changed into a prime (25730203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4366 + ... + 8397.

It is an arithmetic number, because the mean of its divisors is an integer number (1161524).

Almost surely, 2^25730208 is an apocalyptic number.

25730208 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

25730208 is an abundant number, since it is smaller than the sum of its proper divisors (57899520).

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

25730208 is a wasteful number, since it uses less digits than its factorization.

25730208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12786 (or 12775 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 25730208 is about 5072.4952439603. The cubic root of 25730208 is about 295.2213525877.

The spelling of 25730208 in words is "twenty-five million, seven hundred thirty thousand, two hundred eight".