1249753525043 has 4 divisors (see below), whose sum is σ = 1256296737408. Its totient is φ = 1243210312680.

The previous prime is 1249753525039. The next prime is 1249753525093. The reversal of 1249753525043 is 3405253579421.

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

It is a cyclic number.

It is not a de Polignac number, because 1249753525043 - 2² = 1249753525039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1249753524982 and 1249753525000.

It is not an unprimeable number, because it can be changed into a prime (1249753525093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3271605896 + ... + 3271606277.

It is an arithmetic number, because the mean of its divisors is an integer number (314074184352).

Almost surely, 2^{1249753525043} is an apocalyptic number.

1249753525043 is a deficient number, since it is larger than the sum of its proper divisors (6543212365).

1249753525043 is an equidigital number, since it uses as much as digits as its factorization.

1249753525043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6543212364.

The product of its (nonzero) digits is 4536000, while the sum is 50.

The spelling of 1249753525043 in words is "one trillion, two hundred forty-nine billion, seven hundred fifty-three million, five hundred twenty-five thousand, forty-three".