1142225305 has 16 divisors (see below), whose sum is σ = 1500310224. Its totient is φ = 829658880.

The previous prime is 1142225251. The next prime is 1142225317. The reversal of 1142225305 is 5035222411.

It can be written as a sum of positive squares in 8 ways, for example, as 277688896 + 864536409 = 16664^2 + 29403^2 .

It is not a de Polignac number, because 1142225305 - 2⁹ = 1142224793 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1142225305.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140074 + ... + 148003.

It is an arithmetic number, because the mean of its divisors is an integer number (93769389).

Almost surely, 2^1142225305 is an apocalyptic number.

It is an amenable number.

1142225305 is a deficient number, since it is larger than the sum of its proper divisors (358084919).

1142225305 is a wasteful number, since it uses less digits than its factorization.

1142225305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288156.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 1142225305 is about 33796.8238892355. The cubic root of 1142225305 is about 1045.3232076415.

Adding to 1142225305 its reverse (5035222411), we get a palindrome (6177447716).

The spelling of 1142225305 in words is "one billion, one hundred forty-two million, two hundred twenty-five thousand, three hundred five".