25287928 has 24 divisors (see below), whose sum is σ = 48311640. Its totient is φ = 12406800.

The previous prime is 25287923. The next prime is 25287953. The reversal of 25287928 is 82978252.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25287923) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 119743 + ... + 119953.

It is an arithmetic number, because the mean of its divisors is an integer number (2012985).

Almost surely, 2^25287928 is an apocalyptic number.

It is an amenable number.

25287928 is a deficient number, since it is larger than the sum of its proper divisors (23023712).

25287928 is an equidigital number, since it uses as much as digits as its factorization.

25287928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499 (or 284 counting only the distinct ones).

The product of its digits is 161280, while the sum is 43.

The square root of 25287928 is about 5028.7103714571. The cubic root of 25287928 is about 293.5200338069.

The spelling of 25287928 in words is "twenty-five million, two hundred eighty-seven thousand, nine hundred twenty-eight".