25145044 has 12 divisors (see below), whose sum is σ = 44169300. Its totient is φ = 12525248.

The previous prime is 25145039. The next prime is 25145051. The reversal of 25145044 is 44054152.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2220100 + 22924944 = 1490^2 + 4788^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10609 + ... + 12760.

It is an arithmetic number, because the mean of its divisors is an integer number (3680775).

Almost surely, 2^25145044 is an apocalyptic number.

It is an amenable number.

25145044 is a deficient number, since it is larger than the sum of its proper divisors (19024256).

25145044 is a wasteful number, since it uses less digits than its factorization.

25145044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23642 (or 23640 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 25145044 is about 5014.4834230457. The cubic root of 25145044 is about 292.9661653748.

Adding to 25145044 its reverse (44054152), we get a palindrome (69199196).

The spelling of 25145044 in words is "twenty-five million, one hundred forty-five thousand, forty-four".