1285250055303 has 4 divisors (see below), whose sum is σ = 1713666740408. Its totient is φ = 856833370200.

The previous prime is 1285250055289. The next prime is 1285250055319. The reversal of 1285250055303 is 3035500525821.

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

It is not a de Polignac number, because 1285250055303 - 2¹³ = 1285250047111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1285250055403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214208342548 + ... + 214208342553.

It is an arithmetic number, because the mean of its divisors is an integer number (428416685102).

Almost surely, 2^{1285250055303} is an apocalyptic number.

1285250055303 is a deficient number, since it is larger than the sum of its proper divisors (428416685105).

1285250055303 is an equidigital number, since it uses as much as digits as its factorization.

1285250055303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428416685104.

The product of its (nonzero) digits is 180000, while the sum is 39.

The spelling of 1285250055303 in words is "one trillion, two hundred eighty-five billion, two hundred fifty million, fifty-five thousand, three hundred three".