1320203225 has 24 divisors (see below), whose sum is σ = 1788337920. Its totient is φ = 958824000.

The previous prime is 1320203191. The next prime is 1320203233. The reversal of 1320203225 is 5223020231.

It is not a de Polignac number, because 1320203225 - 2¹² = 1320199129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1320203197 and 1320203206.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 225080 + ... + 230870.

It is an arithmetic number, because the mean of its divisors is an integer number (74514080).

Almost surely, 2^1320203225 is an apocalyptic number.

It is an amenable number.

1320203225 is a deficient number, since it is larger than the sum of its proper divisors (468134695).

1320203225 is a wasteful number, since it uses less digits than its factorization.

1320203225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6641 (or 6636 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 1320203225 is about 36334.6009335454. The cubic root of 1320203225 is about 1097.0176030428.

Adding to 1320203225 its reverse (5223020231), we get a palindrome (6543223456).

The spelling of 1320203225 in words is "one billion, three hundred twenty million, two hundred three thousand, two hundred twenty-five".