1220023225 has 24 divisors (see below), whose sum is σ = 1535214240. Its totient is φ = 961643520.

The previous prime is 1220023213. The next prime is 1220023253. The reversal of 1220023225 is 5223200221.

It is a de Polignac number, because none of the positive numbers 2^k-1220023225 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1196766 + ... + 1197784.

It is an arithmetic number, because the mean of its divisors is an integer number (63967260).

Almost surely, 2^1220023225 is an apocalyptic number.

It is an amenable number.

1220023225 is a deficient number, since it is larger than the sum of its proper divisors (315191015).

1220023225 is a wasteful number, since it uses less digits than its factorization.

1220023225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1689 (or 1684 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 1220023225 is about 34928.8308564716. The cubic root of 1220023225 is about 1068.5365105985.

Adding to 1220023225 its reverse (5223200221), we get a palindrome (6443223446).

The spelling of 1220023225 in words is "one billion, two hundred twenty million, twenty-three thousand, two hundred twenty-five".