25225000 has 48 divisors (see below), whose sum is σ = 59175900. Its totient is φ = 10080000.

The previous prime is 25224971. The next prime is 25225001. The reversal of 25225000 is 52252.

It can be written as a sum of positive squares in 6 ways, for example, as 4848804 + 20376196 = 2202^2 + 4514^2 .

It is not an unprimeable number, because it can be changed into a prime (25225001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24496 + ... + 25504.

Almost surely, 2^25225000 is an apocalyptic number.

25225000 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 25225000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29587950).

25225000 is an abundant number, since it is smaller than the sum of its proper divisors (33950900).

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

25225000 is an equidigital number, since it uses as much as digits as its factorization.

25225000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1040 (or 1016 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 16.

The square root of 25225000 is about 5022.4496015391. The cubic root of 25225000 is about 293.2763606064.

Adding to 25225000 its reverse (52252), we get a palindrome (25277252).

It can be divided in two parts, 252 and 25000, that added together give a palindrome (25252).

The spelling of 25225000 in words is "twenty-five million, two hundred twenty-five thousand".