25055280 has 240 divisors, whose sum is σ = 94011840. Its totient is φ = 5947392.

The previous prime is 25055269. The next prime is 25055291. The reversal of 25055280 is 8255052.

It is an interprime number because it is at equal distance from previous prime (25055269) and next prime (25055291).

It is a tau number, because it is divible by the number of its divisors (240).

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 281476 + ... + 281564.

It is an arithmetic number, because the mean of its divisors is an integer number (391716).

Almost surely, 2^25055280 is an apocalyptic number.

25055280 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 25055280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47005920).

25055280 is an abundant number, since it is smaller than the sum of its proper divisors (68956560).

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

25055280 is a wasteful number, since it uses less digits than its factorization.

25055280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148 (or 139 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 25055280 is about 5005.5249474955. The cubic root of 25055280 is about 292.6171347646.

The spelling of 25055280 in words is "twenty-five million, fifty-five thousand, two hundred eighty".