11056625009 has 4 divisors (see below), whose sum is σ = 11077847460. Its totient is φ = 11035402560.

The previous prime is 11056625003. The next prime is 11056625029. The reversal of 11056625009 is 90052665011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90052665011 = 53 ⋅1699106887.

It can be written as a sum of positive squares in 2 ways, for example, as 6103984384 + 4952640625 = 78128^2 + 70375^2 .

It is a cyclic number.

It is not a de Polignac number, because 11056625009 - 2⁴ = 11056624993 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11056625009.

It is not an unprimeable number, because it can be changed into a prime (11056625003) 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, 10610444 + ... + 10611485.

It is an arithmetic number, because the mean of its divisors is an integer number (2769461865).

Almost surely, 2^11056625009 is an apocalyptic number.

It is an amenable number.

11056625009 is a deficient number, since it is larger than the sum of its proper divisors (21222451).

11056625009 is an equidigital number, since it uses as much as digits as its factorization.

11056625009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21222450.

The product of its (nonzero) digits is 16200, while the sum is 35.

The spelling of 11056625009 in words is "eleven billion, fifty-six million, six hundred twenty-five thousand, nine".