251305115230 has 32 divisors (see below), whose sum is σ = 487167746688. Its totient is φ = 92785305600.

The previous prime is 251305115221. The next prime is 251305115261. The reversal of 251305115230 is 32511503152.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 4841515 + ... + 4893145.

It is an arithmetic number, because the mean of its divisors is an integer number (15223992084).

Almost surely, 2^251305115230 is an apocalyptic number.

251305115230 is a deficient number, since it is larger than the sum of its proper divisors (235862631458).

251305115230 is a wasteful number, since it uses less digits than its factorization.

251305115230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89092.

The product of its (nonzero) digits is 4500, while the sum is 28.

Adding to 251305115230 its reverse (32511503152), we get a palindrome (283816618382).

The spelling of 251305115230 in words is "two hundred fifty-one billion, three hundred five million, one hundred fifteen thousand, two hundred thirty".