25255280 has 20 divisors (see below), whose sum is σ = 58718712. Its totient is φ = 10102080.

The previous prime is 25255271. The next prime is 25255283. The reversal of 25255280 is 8255252.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25255283) 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 3 ways as a sum of consecutive naturals, for example, 157766 + ... + 157925.

Almost surely, 2^25255280 is an apocalyptic number.

25255280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25255280 is an abundant number, since it is smaller than the sum of its proper divisors (33463432).

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

25255280 is a wasteful number, since it uses less digits than its factorization.

25255280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315704 (or 315698 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 29.

The square root of 25255280 is about 5025.4631627344. The cubic root of 25255280 is about 293.3936629815.

The spelling of 25255280 in words is "twenty-five million, two hundred fifty-five thousand, two hundred eighty".