1223125145 has 8 divisors (see below), whose sum is σ = 1601182080. Its totient is φ = 889545520.

The previous prime is 1223125139. The next prime is 1223125193. The reversal of 1223125145 is 5415213221.

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

It is a de Polignac number, because none of the positive numbers 2^k-1223125145 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11119265 + ... + 11119374.

It is an arithmetic number, because the mean of its divisors is an integer number (200147760).

Almost surely, 2^1223125145 is an apocalyptic number.

It is an amenable number.

1223125145 is a deficient number, since it is larger than the sum of its proper divisors (378056935).

1223125145 is a wasteful number, since it uses less digits than its factorization.

1223125145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22238655.

The product of its digits is 2400, while the sum is 26.

The square root of 1223125145 is about 34973.2061012427. The cubic root of 1223125145 is about 1069.4413320819.

Adding to 1223125145 its reverse (5415213221), we get a palindrome (6638338366).

The spelling of 1223125145 in words is "one billion, two hundred twenty-three million, one hundred twenty-five thousand, one hundred forty-five".