1125580667 has 4 divisors (see below), whose sum is σ = 1153033896. Its totient is φ = 1098127440.

The previous prime is 1125580657. The next prime is 1125580669. The reversal of 1125580667 is 7660855211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7660855211 = 2161 ⋅3545051.

It is a cyclic number.

It is not a de Polignac number, because 1125580667 - 2⁸ = 1125580411 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41), and also a Moran number because the ratio is a prime number: 27453187 = 1125580667 / (1 + 1 + 2 + 5 + 5 + 8 + 0 + 6 + 6 + 7).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1125580669) 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, 13726553 + ... + 13726634.

It is an arithmetic number, because the mean of its divisors is an integer number (288258474).

Almost surely, 2^1125580667 is an apocalyptic number.

1125580667 is a deficient number, since it is larger than the sum of its proper divisors (27453229).

1125580667 is an equidigital number, since it uses as much as digits as its factorization.

1125580667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27453228.

The product of its (nonzero) digits is 100800, while the sum is 41.

The square root of 1125580667 is about 33549.6746183924. The cubic root of 1125580667 is about 1040.2208194201.

The spelling of 1125580667 in words is "one billion, one hundred twenty-five million, five hundred eighty thousand, six hundred sixty-seven".