1225173273 has 8 divisors (see below), whose sum is σ = 1638413088. Its totient is φ = 814357824.

The previous prime is 1225173263. The next prime is 1225173277. The reversal of 1225173273 is 3723715221.

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

It is not a de Polignac number, because 1225173273 - 2⁵ = 1225173241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1225173277) 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, 604911 + ... + 606932.

It is an arithmetic number, because the mean of its divisors is an integer number (204801636).

Almost surely, 2^1225173273 is an apocalyptic number.

It is an amenable number.

1225173273 is a deficient number, since it is larger than the sum of its proper divisors (413239815).

1225173273 is a wasteful number, since it uses less digits than its factorization.

1225173273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1212183.

The product of its digits is 17640, while the sum is 33.

The square root of 1225173273 is about 35002.4752410455. The cubic root of 1225173273 is about 1070.0379271501.

Adding to 1225173273 its reverse (3723715221), we get a palindrome (4948888494).

The spelling of 1225173273 in words is "one billion, two hundred twenty-five million, one hundred seventy-three thousand, two hundred seventy-three".