1125435555 has 24 divisors (see below), whose sum is σ = 1978236000. Its totient is φ = 591776640.

The previous prime is 1125435551. The next prime is 1125435583. The reversal of 1125435555 is 5555345211.

1125435555 is a `hidden beast` number, since 1 + 1 + 254 + 355 + 55 = 666.

It is not a de Polignac number, because 1125435555 - 2² = 1125435551 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1125435551) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 172930 + ... + 179319.

It is an arithmetic number, because the mean of its divisors is an integer number (82426500).

Almost surely, 2^1125435555 is an apocalyptic number.

1125435555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1125435555 is a deficient number, since it is larger than the sum of its proper divisors (852800445).

1125435555 is a wasteful number, since it uses less digits than its factorization.

1125435555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352331 (or 352328 counting only the distinct ones).

The product of its digits is 75000, while the sum is 36.

The square root of 1125435555 is about 33547.5119047598. The cubic root of 1125435555 is about 1040.1761150835.

The spelling of 1125435555 in words is "one billion, one hundred twenty-five million, four hundred thirty-five thousand, five hundred fifty-five".