1250534125261 has 2 divisors, whose sum is σ = 1250534125262. Its totient is φ = 1250534125260.

The previous prime is 1250534125187. The next prime is 1250534125271. The reversal of 1250534125261 is 1625214350521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 830046722761 + 420487402500 = 911069^2 + 648450^2 .

It is a cyclic number.

It is not a de Polignac number, because 1250534125261 - 2¹⁷ = 1250533994189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1250534125261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1250534125271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 625267062630 + 625267062631.

It is an arithmetic number, because the mean of its divisors is an integer number (625267062631).

Almost surely, 2^{1250534125261} is an apocalyptic number.

It is an amenable number.

1250534125261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1250534125261 is an equidigital number, since it uses as much as digits as its factorization.

1250534125261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72000, while the sum is 37.

Adding to 1250534125261 its reverse (1625214350521), we get a palindrome (2875748475782).

The spelling of 1250534125261 in words is "one trillion, two hundred fifty billion, five hundred thirty-four million, one hundred twenty-five thousand, two hundred sixty-one".