11125502545 has 4 divisors (see below), whose sum is σ = 13350603060. Its totient is φ = 8900402032.

The previous prime is 11125502537. The next prime is 11125502603. The reversal of 11125502545 is 54520552111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54520552111 = 491 ⋅111039821.

It can be written as a sum of positive squares in 2 ways, for example, as 3681091584 + 7444410961 = 60672^2 + 86281^2 .

It is a cyclic number.

It is not a de Polignac number, because 11125502545 - 2³ = 11125502537 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1112550250 + ... + 1112550259.

It is an arithmetic number, because the mean of its divisors is an integer number (3337650765).

Almost surely, 2^11125502545 is an apocalyptic number.

It is an amenable number.

11125502545 is a deficient number, since it is larger than the sum of its proper divisors (2225100515).

11125502545 is an equidigital number, since it uses as much as digits as its factorization.

11125502545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2225100514.

The product of its (nonzero) digits is 10000, while the sum is 31.

The spelling of 11125502545 in words is "eleven billion, one hundred twenty-five million, five hundred two thousand, five hundred forty-five".