1125040555 has 4 divisors (see below), whose sum is σ = 1350048672. Its totient is φ = 900032440.

The previous prime is 1125040541. The next prime is 1125040571. The reversal of 1125040555 is 5550405211.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1125040555 - 2⁵ = 1125040523 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112504051 + ... + 112504060.

It is an arithmetic number, because the mean of its divisors is an integer number (337512168).

Almost surely, 2^1125040555 is an apocalyptic number.

1125040555 is a deficient number, since it is larger than the sum of its proper divisors (225008117).

1125040555 is an equidigital number, since it uses as much as digits as its factorization.

1125040555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225008116.

The product of its (nonzero) digits is 5000, while the sum is 28.

The square root of 1125040555 is about 33541.6242152940. The cubic root of 1125040555 is about 1040.0544088276.

Adding to 1125040555 its reverse (5550405211), we get a palindrome (6675445766).

The spelling of 1125040555 in words is "one billion, one hundred twenty-five million, forty thousand, five hundred fifty-five".