25135244 has 6 divisors (see below), whose sum is σ = 43986684. Its totient is φ = 12567620.

The previous prime is 25135241. The next prime is 25135259. The reversal of 25135244 is 44253152.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (25135241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3141902 + ... + 3141909.

It is an arithmetic number, because the mean of its divisors is an integer number (7331114).

Almost surely, 2^25135244 is an apocalyptic number.

It is an amenable number.

25135244 is a deficient number, since it is larger than the sum of its proper divisors (18851440).

25135244 is a wasteful number, since it uses less digits than its factorization.

25135244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6283815 (or 6283813 counting only the distinct ones).

The product of its digits is 4800, while the sum is 26.

The square root of 25135244 is about 5013.5061583686. The cubic root of 25135244 is about 292.9281003325.

Adding to 25135244 its reverse (44253152), we get a palindrome (69388396).

The spelling of 25135244 in words is "twenty-five million, one hundred thirty-five thousand, two hundred forty-four".