1125355655 has 8 divisors (see below), whose sum is σ = 1421502000. Its totient is φ = 852901056.

The previous prime is 1125355607. The next prime is 1125355657. The reversal of 1125355655 is 5565535211.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1125355655 - 2³⁰ = 51613831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125355657) 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, 5922830 + ... + 5923019.

It is an arithmetic number, because the mean of its divisors is an integer number (177687750).

Almost surely, 2^1125355655 is an apocalyptic number.

1125355655 is a deficient number, since it is larger than the sum of its proper divisors (296146345).

1125355655 is a wasteful number, since it uses less digits than its factorization.

1125355655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11845873.

The product of its digits is 112500, while the sum is 38.

The square root of 1125355655 is about 33546.3210352492. The cubic root of 1125355655 is about 1040.1514988248.

The spelling of 1125355655 in words is "one billion, one hundred twenty-five million, three hundred fifty-five thousand, six hundred fifty-five".