251226516241 has 4 divisors (see below), whose sum is σ = 251227887984. Its totient is φ = 251225144500.

The previous prime is 251226516187. The next prime is 251226516283. The reversal of 251226516241 is 142615622152.

251226516241 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 251226516241 - 2²⁹ = 250689645329 is a prime.

It is a super-2 number, since 2×251226516241² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 251226516241.

It is not an unprimeable number, because it can be changed into a prime (251226514241) 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 3 ways as a sum of consecutive naturals, for example, 359335 + ... + 794716.

It is an arithmetic number, because the mean of its divisors is an integer number (62806971996).

Almost surely, 2^251226516241 is an apocalyptic number.

It is an amenable number.

251226516241 is a deficient number, since it is larger than the sum of its proper divisors (1371743).

251226516241 is a wasteful number, since it uses less digits than its factorization.

251226516241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1371742.

The product of its digits is 57600, while the sum is 37.

The spelling of 251226516241 in words is "two hundred fifty-one billion, two hundred twenty-six million, five hundred sixteen thousand, two hundred forty-one".