251314550242 has 16 divisors (see below), whose sum is σ = 430946695872. Its totient is φ = 107675797680.

The previous prime is 251314550231. The next prime is 251314550243. The reversal of 251314550242 is 242055413152.

It is a happy number.

251314550242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 251314550198 and 251314550207.

It is not an unprimeable number, because it can be changed into a prime (251314550243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2485168 + ... + 2584315.

It is an arithmetic number, because the mean of its divisors is an integer number (26934168492).

Almost surely, 2^251314550242 is an apocalyptic number.

251314550242 is a deficient number, since it is larger than the sum of its proper divisors (179632145630).

251314550242 is a wasteful number, since it uses less digits than its factorization.

251314550242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5073033.

The product of its (nonzero) digits is 48000, while the sum is 34.

Adding to 251314550242 its reverse (242055413152), we get a palindrome (493369963394).

The spelling of 251314550242 in words is "two hundred fifty-one billion, three hundred fourteen million, five hundred fifty thousand, two hundred forty-two".