25525224 has 48 divisors (see below), whose sum is σ = 70445700. Its totient is φ = 8346624.

The previous prime is 25525223. The next prime is 25525237. The reversal of 25525224 is 42252552.

It can be written as a sum of positive squares in 2 ways, for example, as 23328900 + 2196324 = 4830^2 + 1482^2 .

It is not an unprimeable number, because it can be changed into a prime (25525223) 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, 472 + ... + 7160.

Almost surely, 2^25525224 is an apocalyptic number.

25525224 is a gapful number since it is divisible by the number (24) 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 25525224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35222850).

25525224 is an abundant number, since it is smaller than the sum of its proper divisors (44920476).

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

25525224 is a wasteful number, since it uses less digits than its factorization.

25525224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6754 (or 6747 counting only the distinct ones).

The product of its digits is 8000, while the sum is 27.

The square root of 25525224 is about 5052.2494000198. The cubic root of 25525224 is about 294.4352846906.

Adding to 25525224 its reverse (42252552), we get a palindrome (67777776).

It can be divided in two parts, 2552 and 5224, that added together give a 5-th power (7776 = 6⁵).

The spelling of 25525224 in words is "twenty-five million, five hundred twenty-five thousand, two hundred twenty-four".