25085280 has 96 divisors (see below), whose sum is σ = 86220288. Its totient is φ = 6080000.

The previous prime is 25085279. The next prime is 25085309. The reversal of 25085280 is 8258052.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2905 + ... + 7655.

It is an arithmetic number, because the mean of its divisors is an integer number (898128).

Almost surely, 2^25085280 is an apocalyptic number.

25085280 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 25085280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43110144).

25085280 is an abundant number, since it is smaller than the sum of its proper divisors (61135008).

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

25085280 is a wasteful number, since it uses less digits than its factorization.

25085280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4780 (or 4772 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 30.

The square root of 25085280 is about 5008.5207396995. The cubic root of 25085280 is about 292.7338767941.

The spelling of 25085280 in words is "twenty-five million, eighty-five thousand, two hundred eighty".