25289000 has 128 divisors (see below), whose sum is σ = 68515200. Its totient is φ = 8712000.

The previous prime is 25288999. The next prime is 25289023. The reversal of 25289000 is 98252.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1330991 + ... + 1331009.

It is an arithmetic number, because the mean of its divisors is an integer number (535275).

Almost surely, 2^25289000 is an apocalyptic number.

25289000 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 25289000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34257600).

25289000 is an abundant number, since it is smaller than the sum of its proper divisors (43226200).

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

25289000 is a wasteful number, since it uses less digits than its factorization.

25289000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73 (or 37 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 25289000 is about 5028.8169582915. The cubic root of 25289000 is about 293.5241813594.

The spelling of 25289000 in words is "twenty-five million, two hundred eighty-nine thousand".