1225224708172 has 48 divisors (see below), whose sum is σ = 2260420979040. Its totient is φ = 580201509888.

The previous prime is 1225224708167. The next prime is 1225224708179. The reversal of 1225224708172 is 2718074225221.

It is not an unprimeable number, because it can be changed into a prime (1225224708179) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32153443 + ... + 32191525.

It is an arithmetic number, because the mean of its divisors is an integer number (47092103730).

Almost surely, 2^{1225224708172} is an apocalyptic number.

It is an amenable number.

1225224708172 is a deficient number, since it is larger than the sum of its proper divisors (1035196270868).

1225224708172 is a wasteful number, since it uses less digits than its factorization.

1225224708172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43402 (or 43400 counting only the distinct ones).

The product of its (nonzero) digits is 250880, while the sum is 43.

The spelling of 1225224708172 in words is "one trillion, two hundred twenty-five billion, two hundred twenty-four million, seven hundred eight thousand, one hundred seventy-two".