1128783525 has 12 divisors (see below), whose sum is σ = 1866255552. Its totient is φ = 602017840.

The previous prime is 1128783517. The next prime is 1128783533. The reversal of 1128783525 is 5253878211.

It is an interprime number because it is at equal distance from previous prime (1128783517) and next prime (1128783533).

It is not a de Polignac number, because 1128783525 - 2³ = 1128783517 is a prime.

It is a super-2 number, since 2×1128783525² = 2548304492622851250, which contains 22 as substring.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 7525149 + ... + 7525298.

It is an arithmetic number, because the mean of its divisors is an integer number (155521296).

Almost surely, 2^1128783525 is an apocalyptic number.

1128783525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1128783525 is a deficient number, since it is larger than the sum of its proper divisors (737472027).

1128783525 is a wasteful number, since it uses less digits than its factorization.

1128783525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15050460 (or 15050455 counting only the distinct ones).

The product of its digits is 134400, while the sum is 42.

The square root of 1128783525 is about 33597.3737812943. The cubic root of 1128783525 is about 1041.2065401066.

It can be divided in two parts, 112878 and 3525, that added together give a triangular number (116403 = T₄₈₂).

The spelling of 1128783525 in words is "one billion, one hundred twenty-eight million, seven hundred eighty-three thousand, five hundred twenty-five".