25225320 has 64 divisors (see below), whose sum is σ = 78128640. Its totient is φ = 6508800.

The previous prime is 25225313. The next prime is 25225337. The reversal of 25225320 is 2352252.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 330 + ... + 7110.

It is an arithmetic number, because the mean of its divisors is an integer number (1220760).

Almost surely, 2^25225320 is an apocalyptic number.

25225320 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 25225320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39064320).

25225320 is an abundant number, since it is smaller than the sum of its proper divisors (52903320).

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

25225320 is a wasteful number, since it uses less digits than its factorization.

25225320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6826 (or 6822 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 25225320 is about 5022.4814584028. The cubic root of 25225320 is about 293.2776007523.

Adding to 25225320 its reverse (2352252), we get a palindrome (27577572).

The spelling of 25225320 in words is "twenty-five million, two hundred twenty-five thousand, three hundred twenty".