251335002242 has 8 divisors (see below), whose sum is σ = 377123385600. Its totient is φ = 125627207044.

The previous prime is 251335002241. The next prime is 251335002271. The reversal of 251335002242 is 242200533152.

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

It is a super-2 number, since 2×251335002242² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (251335002241) by changing a digit.

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, 20139242 + ... + 20151717.

It is an arithmetic number, because the mean of its divisors is an integer number (47140423200).

Almost surely, 2^251335002242 is an apocalyptic number.

251335002242 is a deficient number, since it is larger than the sum of its proper divisors (125788383358).

251335002242 is a wasteful number, since it uses less digits than its factorization.

251335002242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40294080.

The product of its (nonzero) digits is 14400, while the sum is 29.

Adding to 251335002242 its reverse (242200533152), we get a palindrome (493535535394).

The spelling of 251335002242 in words is "two hundred fifty-one billion, three hundred thirty-five million, two thousand, two hundred forty-two".