25730286 has 16 divisors (see below), whose sum is σ = 51603024. Its totient is φ = 8553024.

The previous prime is 25730267. The next prime is 25730293. The reversal of 25730286 is 68203752.

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3511 + ... + 7986.

It is an arithmetic number, because the mean of its divisors is an integer number (3225189).

Almost surely, 2^25730286 is an apocalyptic number.

25730286 is an abundant number, since it is smaller than the sum of its proper divisors (25872738).

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

25730286 is a wasteful number, since it uses less digits than its factorization.

25730286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11875.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 25730286 is about 5072.5029324782. The cubic root of 25730286 is about 295.2216509043.

The spelling of 25730286 in words is "twenty-five million, seven hundred thirty thousand, two hundred eighty-six".