11125540 has 24 divisors (see below), whose sum is σ = 23510592. Its totient is φ = 4422240.

The previous prime is 11125489. The next prime is 11125547. The reversal of 11125540 is 4552111.

It is not an unprimeable number, because it can be changed into a prime (11125547) 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, 1675 + ... + 5005.

It is an arithmetic number, because the mean of its divisors is an integer number (979608).

Almost surely, 2^11125540 is an apocalyptic number.

11125540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11125540 is an abundant number, since it is smaller than the sum of its proper divisors (12385052).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11125540 is a wasteful number, since it uses less digits than its factorization.

11125540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3507 (or 3505 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 11125540 is about 3335.4969644717. The cubic root of 11125540 is about 223.2408666494.

Adding to 11125540 its reverse (4552111), we get a palindrome (15677651).

It can be divided in two parts, 111 and 25540, that added together give a triangular number (25651 = T₂₂₆).

The spelling of 11125540 in words is "eleven million, one hundred twenty-five thousand, five hundred forty".