251234552213 has 8 divisors (see below), whose sum is σ = 253303800000. Its totient is φ = 249173372448.

The previous prime is 251234552197. The next prime is 251234552227. The reversal of 251234552213 is 312255432152.

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

It is a cyclic number.

It is not a de Polignac number, because 251234552213 - 2⁴ = 251234552197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (251234552293) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1954463 + ... + 2079036.

It is an arithmetic number, because the mean of its divisors is an integer number (31662975000).

Almost surely, 2^251234552213 is an apocalyptic number.

It is an amenable number.

251234552213 is a deficient number, since it is larger than the sum of its proper divisors (2069247787).

251234552213 is a wasteful number, since it uses less digits than its factorization.

251234552213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4034011.

The product of its digits is 72000, while the sum is 35.

Adding to 251234552213 its reverse (312255432152), we get a palindrome (563489984365).

The spelling of 251234552213 in words is "two hundred fifty-one billion, two hundred thirty-four million, five hundred fifty-two thousand, two hundred thirteen".