1225123544 has 16 divisors (see below), whose sum is σ = 2304497520. Its totient is φ = 610590880.

The previous prime is 1225123519. The next prime is 1225123579. The reversal of 1225123544 is 4453215221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 243719 + ... + 248694.

It is an arithmetic number, because the mean of its divisors is an integer number (144031095).

Almost surely, 2^1225123544 is an apocalyptic number.

It is an amenable number.

1225123544 is a deficient number, since it is larger than the sum of its proper divisors (1079373976).

1225123544 is a wasteful number, since it uses less digits than its factorization.

1225123544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492730 (or 492726 counting only the distinct ones).

The product of its digits is 9600, while the sum is 29.

The square root of 1225123544 is about 35001.7648697891. The cubic root of 1225123544 is about 1070.0234495691.

Adding to 1225123544 its reverse (4453215221), we get a palindrome (5678338765).

The spelling of 1225123544 in words is "one billion, two hundred twenty-five million, one hundred twenty-three thousand, five hundred forty-four".