1125521005243 has 16 divisors (see below), whose sum is σ = 1130388577920. Its totient is φ = 1120667788800.

The previous prime is 1125521005223. The next prime is 1125521005247. The reversal of 1125521005243 is 3425001255211.

It is a cyclic number.

It is not a de Polignac number, because 1125521005243 - 2⁵ = 1125521005211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1125521005247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 771432448 + ... + 771433906.

It is an arithmetic number, because the mean of its divisors is an integer number (70649286120).

Almost surely, 2^{1125521005243} is an apocalyptic number.

1125521005243 is a deficient number, since it is larger than the sum of its proper divisors (4867572677).

1125521005243 is a wasteful number, since it uses less digits than its factorization.

1125521005243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4458.

The product of its (nonzero) digits is 12000, while the sum is 31.

The spelling of 1125521005243 in words is "one trillion, one hundred twenty-five billion, five hundred twenty-one million, five thousand, two hundred forty-three".