1222409225 has 24 divisors (see below), whose sum is σ = 1635263640. Its totient is φ = 903019520.

The previous prime is 1222409207. The next prime is 1222409233. The reversal of 1222409225 is 5229042221.

1222409225 is nontrivially palindromic in base 8.

It can be written as a sum of positive squares in 12 ways, for example, as 1885129 + 1220524096 = 1373^2 + 34936^2 .

It is not a de Polignac number, because 1222409225 - 2⁸ = 1222408969 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, 4610 + ... + 49659.

It is an arithmetic number, because the mean of its divisors is an integer number (68135985).

Almost surely, 2^1222409225 is an apocalyptic number.

It is an amenable number.

1222409225 is a deficient number, since it is larger than the sum of its proper divisors (412854415).

1222409225 is a wasteful number, since it uses less digits than its factorization.

1222409225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54349 (or 54344 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 1222409225 is about 34962.9693390021. The cubic root of 1222409225 is about 1069.2326361114.

The spelling of 1222409225 in words is "one billion, two hundred twenty-two million, four hundred nine thousand, two hundred twenty-five".