25244253 has 6 divisors (see below), whose sum is σ = 36463934. Its totient is φ = 16829496.

The previous prime is 25244237. The next prime is 25244257. The reversal of 25244253 is 35244252.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 16793604 + 8450649 = 4098^2 + 2907^2 .

It is not a de Polignac number, because 25244253 - 2⁴ = 25244237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25244257) 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 5 ways as a sum of consecutive naturals, for example, 1402450 + ... + 1402467.

Almost surely, 2^25244253 is an apocalyptic number.

It is an amenable number.

25244253 is a deficient number, since it is larger than the sum of its proper divisors (11219681).

25244253 is a wasteful number, since it uses less digits than its factorization.

25244253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2804923 (or 2804920 counting only the distinct ones).

The product of its digits is 9600, while the sum is 27.

The square root of 25244253 is about 5024.3659301448. The cubic root of 25244253 is about 293.3509560980.

Subtracting 25244253 from its reverse (35244252), we obtain a palindrome (9999999).

The spelling of 25244253 in words is "twenty-five million, two hundred forty-four thousand, two hundred fifty-three".