250415721473 has 2 divisors, whose sum is σ = 250415721474. Its totient is φ = 250415721472.

The previous prime is 250415721329. The next prime is 250415721481. The reversal of 250415721473 is 374127514052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 231108063169 + 19307658304 = 480737^2 + 138952^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-250415721473 is a prime.

It is a super-2 number, since 2×250415721473² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 250415721473.

It is not a weakly prime, because it can be changed into another prime (250415724473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125207860736 + 125207860737.

It is an arithmetic number, because the mean of its divisors is an integer number (125207860737).

Almost surely, 2^250415721473 is an apocalyptic number.

It is an amenable number.

250415721473 is a deficient number, since it is larger than the sum of its proper divisors (1).

250415721473 is an equidigital number, since it uses as much as digits as its factorization.

250415721473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 235200, while the sum is 41.

The spelling of 250415721473 in words is "two hundred fifty billion, four hundred fifteen million, seven hundred twenty-one thousand, four hundred seventy-three".