25302530 has 64 divisors (see below), whose sum is σ = 52939008. Its totient is φ = 8616960.

The previous prime is 25302523. The next prime is 25302551. The reversal of 25302530 is 3520352.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 184622 + ... + 184758.

It is an arithmetic number, because the mean of its divisors is an integer number (827172).

Almost surely, 2^25302530 is an apocalyptic number.

25302530 is an abundant number, since it is smaller than the sum of its proper divisors (27636478).

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

25302530 is a wasteful number, since it uses less digits than its factorization.

25302530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251.

The product of its (nonzero) digits is 900, while the sum is 20.

The square root of 25302530 is about 5030.1620252234. The cubic root of 25302530 is about 293.5765186620.

Adding to 25302530 its reverse (3520352), we get a palindrome (28822882).

The spelling of 25302530 in words is "twenty-five million, three hundred two thousand, five hundred thirty".