11125381 has 4 divisors (see below), whose sum is σ = 11158732. Its totient is φ = 11092032.

The previous prime is 11125379. The next prime is 11125409. The reversal of 11125381 is 18352111.

11125381 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2452356 + 8673025 = 1566^2 + 2945^2 .

It is a cyclic number.

It is not a de Polignac number, because 11125381 - 2¹ = 11125379 is a prime.

It is a super-2 number, since 2×11125381² = 247548204790322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11125351) 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, 16170 + ... + 16843.

It is an arithmetic number, because the mean of its divisors is an integer number (2789683).

Almost surely, 2^11125381 is an apocalyptic number.

It is an amenable number.

11125381 is a deficient number, since it is larger than the sum of its proper divisors (33351).

11125381 is an equidigital number, since it uses as much as digits as its factorization.

11125381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33350.

The product of its digits is 240, while the sum is 22.

The square root of 11125381 is about 3335.4731298573. The cubic root of 11125381 is about 223.2398031664.

Adding to 11125381 its reverse (18352111), we get a palindrome (29477492).

The spelling of 11125381 in words is "eleven million, one hundred twenty-five thousand, three hundred eighty-one".