25522530 has 96 divisors (see below), whose sum is σ = 68947200. Its totient is φ = 6040320.

The previous prime is 25522501. The next prime is 25522531. The reversal of 25522530 is 3522552.

It is a self number, because there is not a number n which added to its sum of digits gives 25522530.

It is not an unprimeable number, because it can be changed into a prime (25522531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 286726 + ... + 286814.

It is an arithmetic number, because the mean of its divisors is an integer number (718200).

Almost surely, 2^25522530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25522530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34473600).

25522530 is an abundant number, since it is smaller than the sum of its proper divisors (43424670).

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

25522530 is a wasteful number, since it uses less digits than its factorization.

25522530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200 (or 189 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 24.

The square root of 25522530 is about 5051.9827790680. The cubic root of 25522530 is about 294.4249258319.

It can be divided in two parts, 255225 and 30, that added together give a triangular number (255255 = T₇₁₄).

The spelling of 25522530 in words is "twenty-five million, five hundred twenty-two thousand, five hundred thirty".