25002105134242 has 8 divisors (see below), whose sum is σ = 37504690204716. Its totient is φ = 12500541732672.

The previous prime is 25002105134239. The next prime is 25002105134243. The reversal of 25002105134242 is 24243150120052.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 24839049886641 + 163055247601 = 4983879^2 + 403801^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×25002105134242² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25002105134243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 255356043 + ... + 255453934.

Almost surely, 2^{25002105134242} is an apocalyptic number.

25002105134242 is a deficient number, since it is larger than the sum of its proper divisors (12502585070474).

25002105134242 is a wasteful number, since it uses less digits than its factorization.

25002105134242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510834452.

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 25002105134242 its reverse (24243150120052), we get a palindrome (49245255254294).

The spelling of 25002105134242 in words is "twenty-five trillion, two billion, one hundred five million, one hundred thirty-four thousand, two hundred forty-two".