1011125647 has 4 divisors (see below), whose sum is σ = 1155572176. Its totient is φ = 866679120.

The previous prime is 1011125611. The next prime is 1011125651. The reversal of 1011125647 is 7465211101.

1011125647 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 1011125647 - 2⁷ = 1011125519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011126647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72223254 + ... + 72223267.

It is an arithmetic number, because the mean of its divisors is an integer number (288893044).

Almost surely, 2^1011125647 is an apocalyptic number.

1011125647 is a deficient number, since it is larger than the sum of its proper divisors (144446529).

1011125647 is an equidigital number, since it uses as much as digits as its factorization.

1011125647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144446528.

The product of its (nonzero) digits is 1680, while the sum is 28.

The square root of 1011125647 is about 31798.2019460220. The cubic root of 1011125647 is about 1003.6948800471.

Adding to 1011125647 its reverse (7465211101), we get a palindrome (8476336748).

The spelling of 1011125647 in words is "one billion, eleven million, one hundred twenty-five thousand, six hundred forty-seven".