1205320250 has 16 divisors (see below), whose sum is σ = 2256359976. Its totient is φ = 482128000.

The previous prime is 1205320241. The next prime is 1205320261. The reversal of 1205320250 is 520235021.

It can be written as a sum of positive squares in 4 ways, for example, as 598634089 + 606686161 = 24467^2 + 24631^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2410391 + ... + 2410890.

Almost surely, 2^1205320250 is an apocalyptic number.

1205320250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1205320250 is a deficient number, since it is larger than the sum of its proper divisors (1051039726).

1205320250 is an equidigital number, since it uses as much as digits as its factorization.

1205320250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4821298 (or 4821288 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 1205320250 is about 34717.7224195367. The cubic root of 1205320250 is about 1064.2267010162.

Adding to 1205320250 its reverse (520235021), we get a palindrome (1725555271).

The spelling of 1205320250 in words is "one billion, two hundred five million, three hundred twenty thousand, two hundred fifty".