25447412042 has 16 divisors (see below), whose sum is σ = 41569242120. Its totient is φ = 11612992512.

The previous prime is 25447412017. The next prime is 25447412057. The reversal of 25447412042 is 24021474452.

It can be written as a sum of positive squares in 4 ways, for example, as 20995720201 + 4451691841 = 144899^2 + 66721^2 .

It is a junction number, because it is equal to n+sod(n) for n = 25447411993 and 25447412011.

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 7 ways as a sum of consecutive naturals, for example, 5496263 + ... + 5500890.

Almost surely, 2^25447412042 is an apocalyptic number.

25447412042 is a deficient number, since it is larger than the sum of its proper divisors (16121830078).

25447412042 is a wasteful number, since it uses less digits than its factorization.

25447412042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10997257.

The product of its (nonzero) digits is 71680, while the sum is 35.

Adding to 25447412042 its reverse (24021474452), we get a palindrome (49468886494).

The spelling of 25447412042 in words is "twenty-five billion, four hundred forty-seven million, four hundred twelve thousand, forty-two".