1224125545 has 16 divisors (see below), whose sum is σ = 1560394368. Its totient is φ = 918711040.

The previous prime is 1224125537. The next prime is 1224125557. The reversal of 1224125545 is 5455214221.

It is not a de Polignac number, because 1224125545 - 2³ = 1224125537 is a prime.

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, 3282 + ... + 49588.

It is an arithmetic number, because the mean of its divisors is an integer number (97524648).

Almost surely, 2^1224125545 is an apocalyptic number.

It is an amenable number.

1224125545 is a deficient number, since it is larger than the sum of its proper divisors (336268823).

1224125545 is a wasteful number, since it uses less digits than its factorization.

1224125545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46640.

The product of its digits is 16000, while the sum is 31.

The square root of 1224125545 is about 34987.5055555551. The cubic root of 1224125545 is about 1069.7328197142.

Adding to 1224125545 its reverse (5455214221), we get a palindrome (6679339766).

The spelling of 1224125545 in words is "one billion, two hundred twenty-four million, one hundred twenty-five thousand, five hundred forty-five".