25289530 has 16 divisors (see below), whose sum is σ = 52024320. Its totient is φ = 8670672.

The previous prime is 25289507. The next prime is 25289531. The reversal of 25289530 is 3598252.

It is not an unprimeable number, because it can be changed into a prime (25289531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180570 + ... + 180709.

It is an arithmetic number, because the mean of its divisors is an integer number (3251520).

Almost surely, 2^25289530 is an apocalyptic number.

25289530 is an abundant number, since it is smaller than the sum of its proper divisors (26734790).

25289530 is a wasteful number, since it uses less digits than its factorization.

25289530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361293.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 25289530 is about 5028.8696543060. The cubic root of 25289530 is about 293.5262318785.

The spelling of 25289530 in words is "twenty-five million, two hundred eighty-nine thousand, five hundred thirty".