1200606251 has 6 divisors (see below), whose sum is σ = 1300064940. Its totient is φ = 1108251768.

The previous prime is 1200606227. The next prime is 1200606263. The reversal of 1200606251 is 1526060021.

It is a de Polignac number, because none of the positive numbers 2^k-1200606251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1200606221) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 3551921 + ... + 3552258.

It is an arithmetic number, because the mean of its divisors is an integer number (216677490).

Almost surely, 2^1200606251 is an apocalyptic number.

1200606251 is a deficient number, since it is larger than the sum of its proper divisors (99458689).

1200606251 is an equidigital number, since it uses as much as digits as its factorization.

1200606251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7104205 (or 7104192 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 1200606251 is about 34649.7655259022. The cubic root of 1200606251 is about 1062.8374940046.

Adding to 1200606251 its reverse (1526060021), we get a palindrome (2726666272).

The spelling of 1200606251 in words is "one billion, two hundred million, six hundred six thousand, two hundred fifty-one".