1225744573 has 4 divisors (see below), whose sum is σ = 1227891808. Its totient is φ = 1223597340.

The previous prime is 1225744501. The next prime is 1225744577. The reversal of 1225744573 is 3754475221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1225744573 - 2²⁵ = 1192190141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225744577) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1072761 + ... + 1073902.

It is an arithmetic number, because the mean of its divisors is an integer number (306972952).

Almost surely, 2^1225744573 is an apocalyptic number.

It is an amenable number.

1225744573 is a deficient number, since it is larger than the sum of its proper divisors (2147235).

1225744573 is an equidigital number, since it uses as much as digits as its factorization.

1225744573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2147234.

The product of its digits is 235200, while the sum is 40.

The square root of 1225744573 is about 35010.6351413396. The cubic root of 1225744573 is about 1070.2042213626.

The spelling of 1225744573 in words is "one billion, two hundred twenty-five million, seven hundred forty-four thousand, five hundred seventy-three".