25473280 has 72 divisors (see below), whose sum is σ = 69757632. Its totient is φ = 8730624.

The previous prime is 25473271. The next prime is 25473299. The reversal of 25473280 is 8237452.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7539 + ... + 10381.

It is an arithmetic number, because the mean of its divisors is an integer number (968856).

Almost surely, 2^25473280 is an apocalyptic number.

25473280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25473280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34878816).

25473280 is an abundant number, since it is smaller than the sum of its proper divisors (44284352).

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

25473280 is an equidigital number, since it uses as much as digits as its factorization.

25473280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2871 (or 2857 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 25473280 is about 5047.1061015200. The cubic root of 25473280 is about 294.2354231375.

The spelling of 25473280 in words is "twenty-five million, four hundred seventy-three thousand, two hundred eighty".