1125544015 has 8 divisors (see below), whose sum is σ = 1379390400. Its totient is φ = 881276832.

The previous prime is 1125543997. The next prime is 1125544019. The reversal of 1125544015 is 5104455211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1125544015 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125544019) 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, 2394540 + ... + 2395009.

It is an arithmetic number, because the mean of its divisors is an integer number (172423800).

Almost surely, 2^1125544015 is an apocalyptic number.

1125544015 is a deficient number, since it is larger than the sum of its proper divisors (253846385).

1125544015 is an equidigital number, since it uses as much as digits as its factorization.

1125544015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4789601.

The product of its (nonzero) digits is 4000, while the sum is 28.

The square root of 1125544015 is about 33549.1283791397. The cubic root of 1125544015 is about 1040.2095284813.

Adding to 1125544015 its reverse (5104455211), we get a palindrome (6229999226).

The spelling of 1125544015 in words is "one billion, one hundred twenty-five million, five hundred forty-four thousand, fifteen".