25243213266242 has 8 divisors (see below), whose sum is σ = 37892641225932. Its totient is φ = 12612332857600.

The previous prime is 25243213266223. The next prime is 25243213266253. The reversal of 25243213266242 is 24266231234252.

It can be written as a sum of positive squares in 2 ways, for example, as 19062226692961 + 6180986573281 = 4366031^2 + 2486159^2 .

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

It is a super-2 number, since 2×25243213266242² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25243213266193 and 25243213266202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4636884359 + ... + 4636889802.

Almost surely, 2^{25243213266242} is an apocalyptic number.

25243213266242 is a deficient number, since it is larger than the sum of its proper divisors (12649427959690).

25243213266242 is a wasteful number, since it uses less digits than its factorization.

25243213266242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9273775524.

The product of its digits is 1658880, while the sum is 44.

The spelling of 25243213266242 in words is "twenty-five trillion, two hundred forty-three billion, two hundred thirteen million, two hundred sixty-six thousand, two hundred forty-two".