1262500125149 has 2 divisors, whose sum is σ = 1262500125150. Its totient is φ = 1262500125148.

The previous prime is 1262500125121. The next prime is 1262500125181. The reversal of 1262500125149 is 9415210052621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 858296632249 + 404203492900 = 926443^2 + 635770^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1262500125149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1262500125119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 631250062574 + 631250062575.

It is an arithmetic number, because the mean of its divisors is an integer number (631250062575).

Almost surely, 2^{1262500125149} is an apocalyptic number.

It is an amenable number.

1262500125149 is a deficient number, since it is larger than the sum of its proper divisors (1).

1262500125149 is an equidigital number, since it uses as much as digits as its factorization.

1262500125149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43200, while the sum is 38.

The spelling of 1262500125149 in words is "one trillion, two hundred sixty-two billion, five hundred million, one hundred twenty-five thousand, one hundred forty-nine".