25280256 has 36 divisors (see below), whose sum is σ = 67284392. Its totient is φ = 8426496.

The previous prime is 25280201. The next prime is 25280273. The reversal of 25280256 is 65208252.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15691 + ... + 17226.

Almost surely, 2^25280256 is an apocalyptic number.

It is an amenable number.

25280256 is an abundant number, since it is smaller than the sum of its proper divisors (42004136).

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

25280256 is an equidigital number, since it uses as much as digits as its factorization.

25280256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32936 (or 32922 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 25280256 is about 5027.9474937593. The cubic root of 25280256 is about 293.4903475277.

It can be divided in two parts, 252 and 80256, that added together give a palindrome (80508).

The spelling of 25280256 in words is "twenty-five million, two hundred eighty thousand, two hundred fifty-six".