1123525515 has 32 divisors (see below), whose sum is σ = 2074807296. Its totient is φ = 508521600.

The previous prime is 1123525493. The next prime is 1123525567. The reversal of 1123525515 is 5155253211.

It is not a de Polignac number, because 1123525515 - 2⁹ = 1123525003 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42367 + ... + 63576.

It is an arithmetic number, because the mean of its divisors is an integer number (64837728).

Almost surely, 2^1123525515 is an apocalyptic number.

1123525515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1123525515 is a deficient number, since it is larger than the sum of its proper divisors (951281781).

1123525515 is a wasteful number, since it uses less digits than its factorization.

1123525515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106059.

The product of its digits is 7500, while the sum is 30.

The square root of 1123525515 is about 33519.0321310148. The cubic root of 1123525515 is about 1039.5873347378.

Adding to 1123525515 its reverse (5155253211), we get a palindrome (6278778726).

The spelling of 1123525515 in words is "one billion, one hundred twenty-three million, five hundred twenty-five thousand, five hundred fifteen".