11111125261 has 8 divisors (see below), whose sum is σ = 11287337600. Its totient is φ = 10936263600.

The previous prime is 11111125243. The next prime is 11111125283. The reversal of 11111125261 is 16252111111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11111125261 - 2¹¹ = 11111123213 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 (11111125211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 321081 + ... + 353998.

It is an arithmetic number, because the mean of its divisors is an integer number (1410917200).

Almost surely, 2^11111125261 is an apocalyptic number.

It is an amenable number.

11111125261 is a deficient number, since it is larger than the sum of its proper divisors (176212339).

11111125261 is a wasteful number, since it uses less digits than its factorization.

11111125261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675339.

The product of its digits is 120, while the sum is 22.

Adding to 11111125261 its reverse (16252111111), we get a palindrome (27363236372).

The spelling of 11111125261 in words is "eleven billion, one hundred eleven million, one hundred twenty-five thousand, two hundred sixty-one".