25649268 has 24 divisors (see below), whose sum is σ = 60187680. Its totient is φ = 8501280.

The previous prime is 25649233. The next prime is 25649269. The reversal of 25649268 is 86294652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25649269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3823 + ... + 8118.

It is an arithmetic number, because the mean of its divisors is an integer number (2507820).

Almost surely, 2^25649268 is an apocalyptic number.

It is an amenable number.

25649268 is an abundant number, since it is smaller than the sum of its proper divisors (34538412).

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

25649268 is a wasteful number, since it uses less digits than its factorization.

25649268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12127 (or 12125 counting only the distinct ones).

The product of its digits is 207360, while the sum is 42.

The square root of 25649268 is about 5064.5106377616. The cubic root of 25649268 is about 294.9114662985.

The spelling of 25649268 in words is "twenty-five million, six hundred forty-nine thousand, two hundred sixty-eight".