1230221425 has 12 divisors (see below), whose sum is σ = 1554258780. Its totient is φ = 965606720.

The previous prime is 1230221407. The next prime is 1230221431. The reversal of 1230221425 is 5241220321.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 113124496 + 1117096929 = 10636^2 + 33423^2 .

It is not a de Polignac number, because 1230221425 - 2⁷ = 1230221297 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1230221396 and 1230221405.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 462910 + ... + 465559.

It is an arithmetic number, because the mean of its divisors is an integer number (129521565).

Almost surely, 2^1230221425 is an apocalyptic number.

It is an amenable number.

1230221425 is a deficient number, since it is larger than the sum of its proper divisors (324037355).

1230221425 is an equidigital number, since it uses as much as digits as its factorization.

1230221425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 928532 (or 928527 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 1230221425 is about 35074.5124698833. The cubic root of 1230221425 is about 1071.5055595684.

Adding to 1230221425 its reverse (5241220321), we get a palindrome (6471441746).

The spelling of 1230221425 in words is "one billion, two hundred thirty million, two hundred twenty-one thousand, four hundred twenty-five".