1257600124993 has 4 divisors (see below), whose sum is σ = 1259261420500. Its totient is φ = 1255938829488.

The previous prime is 1257600124981. The next prime is 1257600125017. The reversal of 1257600124993 is 3994210067521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1020398981904 + 237201143089 = 1010148^2 + 487033^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1257600124993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1257600124933) 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 in 3 ways as a sum of consecutive naturals, for example, 830646618 + ... + 830648131.

It is an arithmetic number, because the mean of its divisors is an integer number (314815355125).

Almost surely, 2^{1257600124993} is an apocalyptic number.

It is an amenable number.

1257600124993 is a deficient number, since it is larger than the sum of its proper divisors (1661295507).

1257600124993 is an equidigital number, since it uses as much as digits as its factorization.

1257600124993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1661295506.

The product of its (nonzero) digits is 816480, while the sum is 49.

The spelling of 1257600124993 in words is "one trillion, two hundred fifty-seven billion, six hundred million, one hundred twenty-four thousand, nine hundred ninety-three".