1200425305 has 4 divisors (see below), whose sum is σ = 1440510372. Its totient is φ = 960340240.

The previous prime is 1200425273. The next prime is 1200425353. The reversal of 1200425305 is 5035240021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 951290649 + 249134656 = 30843^2 + 15784^2 .

It is not a de Polignac number, because 1200425305 - 2⁵ = 1200425273 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120042526 + ... + 120042535.

It is an arithmetic number, because the mean of its divisors is an integer number (360127593).

Almost surely, 2^1200425305 is an apocalyptic number.

It is an amenable number.

1200425305 is a deficient number, since it is larger than the sum of its proper divisors (240085067).

1200425305 is an equidigital number, since it uses as much as digits as its factorization.

1200425305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240085066.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 1200425305 is about 34647.1543564547. The cubic root of 1200425305 is about 1062.7840971324.

Adding to 1200425305 its reverse (5035240021), we get a palindrome (6235665326).

The spelling of 1200425305 in words is "one billion, two hundred million, four hundred twenty-five thousand, three hundred five".