251015005250213 has 2 divisors, whose sum is σ = 251015005250214. Its totient is φ = 251015005250212.

The previous prime is 251015005250201. The next prime is 251015005250221. The reversal of 251015005250213 is 312052500510152.

251015005250213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 242068104697444 + 8946900552769 = 15558538^2 + 2991137^2 .

It is a cyclic number.

It is not a de Polignac number, because 251015005250213 - 2¹⁶ = 251015005184677 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 251015005250213.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (251015005240213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125507502625106 + 125507502625107.

It is an arithmetic number, because the mean of its divisors is an integer number (125507502625107).

Almost surely, 2^{251015005250213} is an apocalyptic number.

It is an amenable number.

251015005250213 is a deficient number, since it is larger than the sum of its proper divisors (1).

251015005250213 is an equidigital number, since it uses as much as digits as its factorization.

251015005250213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15000, while the sum is 32.

Adding to 251015005250213 its reverse (312052500510152), we get a palindrome (563067505760365).

The spelling of 251015005250213 in words is "two hundred fifty-one trillion, fifteen billion, five million, two hundred fifty thousand, two hundred thirteen".