1125551545 has 16 divisors (see below), whose sum is σ = 1422576000. Its totient is φ = 852553728.

The previous prime is 1125551501. The next prime is 1125551561. The reversal of 1125551545 is 5451555211.

It is a cyclic number.

It is not a de Polignac number, because 1125551545 - 2⁹ = 1125551033 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1125551545.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 314476 + ... + 318034.

It is an arithmetic number, because the mean of its divisors is an integer number (88911000).

Almost surely, 2^1125551545 is an apocalyptic number.

It is an amenable number.

1125551545 is a deficient number, since it is larger than the sum of its proper divisors (297024455).

1125551545 is a wasteful number, since it uses less digits than its factorization.

1125551545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6912.

The product of its digits is 25000, while the sum is 34.

The square root of 1125551545 is about 33549.2406024339. The cubic root of 1125551545 is about 1040.2118481774.

The spelling of 1125551545 in words is "one billion, one hundred twenty-five million, five hundred fifty-one thousand, five hundred forty-five".