1115442125 has 48 divisors (see below), whose sum is σ = 1627769520. Its totient is φ = 760905600.

The previous prime is 1115442121. The next prime is 1115442137. The reversal of 1115442125 is 5212445111.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 269912041 + 845530084 = 16429^2 + 29078^2 .

It is not a de Polignac number, because 1115442125 - 2² = 1115442121 is a prime.

It is a super-2 number, since 2×1115442125² = 2488422268449031250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1115442094 and 1115442103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1115442121) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1647287 + ... + 1647963.

It is an arithmetic number, because the mean of its divisors is an integer number (33911865).

Almost surely, 2^1115442125 is an apocalyptic number.

It is an amenable number.

1115442125 is a deficient number, since it is larger than the sum of its proper divisors (512327395).

1115442125 is an equidigital number, since it uses as much as digits as its factorization.

1115442125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 975 (or 958 counting only the distinct ones).

The product of its digits is 1600, while the sum is 26.

The square root of 1115442125 is about 33398.2353575754. The cubic root of 1115442125 is about 1037.0881706076.

Adding to 1115442125 its reverse (5212445111), we get a palindrome (6327887236).

The spelling of 1115442125 in words is "one billion, one hundred fifteen million, four hundred forty-two thousand, one hundred twenty-five".