1125557049 has 8 divisors (see below), whose sum is σ = 1565992512. Its totient is φ = 717746480.

The previous prime is 1125557039. The next prime is 1125557099. The reversal of 1125557049 is 9407555211.

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 1125557049 - 2⁴ = 1125557033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1125556998 and 1125557016.

It is not an unprimeable number, because it can be changed into a prime (1125557009) 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, 8156142 + ... + 8156279.

It is an arithmetic number, because the mean of its divisors is an integer number (195749064).

Almost surely, 2^1125557049 is an apocalyptic number.

It is an amenable number.

1125557049 is a deficient number, since it is larger than the sum of its proper divisors (440435463).

1125557049 is a wasteful number, since it uses less digits than its factorization.

1125557049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16312447.

The product of its (nonzero) digits is 63000, while the sum is 39.

The square root of 1125557049 is about 33549.3226310160. The cubic root of 1125557049 is about 1040.2135437362.

The spelling of 1125557049 in words is "one billion, one hundred twenty-five million, five hundred fifty-seven thousand, forty-nine".