1125515455213 has 4 divisors (see below), whose sum is σ = 1134377781760. Its totient is φ = 1116653128668.

The previous prime is 1125515455187. The next prime is 1125515455231. The reversal of 1125515455213 is 3125545155211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1125515455213 - 2²¹ = 1125513358061 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 (1125515455283) 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, 4431163083 + ... + 4431163336.

It is an arithmetic number, because the mean of its divisors is an integer number (283594445440).

Almost surely, 2^{1125515455213} is an apocalyptic number.

It is an amenable number.

1125515455213 is a deficient number, since it is larger than the sum of its proper divisors (8862326547).

1125515455213 is an equidigital number, since it uses as much as digits as its factorization.

1125515455213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8862326546.

The product of its digits is 150000, while the sum is 40.

The spelling of 1125515455213 in words is "one trillion, one hundred twenty-five billion, five hundred fifteen million, four hundred fifty-five thousand, two hundred thirteen".