25472447 has 16 divisors (see below), whose sum is σ = 34202112. Its totient is φ = 18321120.

The previous prime is 25472437. The next prime is 25472459. The reversal of 25472447 is 74427452.

It is a cyclic number.

It is not a de Polignac number, because 25472447 - 2¹⁶ = 25406911 is a prime.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25472437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11723 + ... + 13724.

It is an arithmetic number, because the mean of its divisors is an integer number (2137632).

Almost surely, 2^25472447 is an apocalyptic number.

25472447 is a deficient number, since it is larger than the sum of its proper divisors (8729665).

25472447 is a wasteful number, since it uses less digits than its factorization.

25472447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25478.

The product of its digits is 62720, while the sum is 35.

The square root of 25472447 is about 5047.0235783083. The cubic root of 25472447 is about 294.2322158450.

Adding to 25472447 its reverse (74427452), we get a palindrome (99899899).

It can be divided in two parts, 2547 and 2447, that added together give a palindrome (4994).

The spelling of 25472447 in words is "twenty-five million, four hundred seventy-two thousand, four hundred forty-seven".