25013280 has 144 divisors (see below), whose sum is σ = 83365632. Its totient is φ = 6297600.

The previous prime is 25013279. The next prime is 25013299. The reversal of 25013280 is 8231052.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 610060 + ... + 610100.

It is an arithmetic number, because the mean of its divisors is an integer number (578928).

Almost surely, 2^25013280 is an apocalyptic number.

25013280 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 25013280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41682816).

25013280 is an abundant number, since it is smaller than the sum of its proper divisors (58352352).

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

25013280 is a wasteful number, since it uses less digits than its factorization.

25013280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131 (or 82 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 25013280 is about 5001.3278236884. The cubic root of 25013280 is about 292.4535392639.

It can be divided in two parts, 250 and 13280, that added together give a triangular number (13530 = T₁₆₄).

The spelling of 25013280 in words is "twenty-five million, thirteen thousand, two hundred eighty".