25225506 has 40 divisors (see below), whose sum is σ = 58358784. Its totient is φ = 8135640.

The previous prime is 25225489. The next prime is 25225523. The reversal of 25225506 is 60552252.

It is an interprime number because it is at equal distance from previous prime (25225489) and next prime (25225523).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 25225506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2511 + ... + 7533.

Almost surely, 2^25225506 is an apocalyptic number.

It is a pronic number, being equal to 5022×5023.

It is a practical number, because each smaller number is the sum of distinct divisors of 25225506, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29179392).

25225506 is an abundant number, since it is smaller than the sum of its proper divisors (33133278).

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

25225506 is a wasteful number, since it uses less digits than its factorization.

25225506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5068 (or 5059 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 25225506 is about 5022.4999751120. The cubic root of 25225506 is about 293.2783215823.

Adding to 25225506 its reverse (60552252), we get a palindrome (85777758).

The spelling of 25225506 in words is "twenty-five million, two hundred twenty-five thousand, five hundred six".