1425442233 has 4 divisors (see below), whose sum is σ = 1900589648. Its totient is φ = 950294820.

The previous prime is 1425442211. The next prime is 1425442237. The reversal of 1425442233 is 3322445241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-1425442233 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 1425442233.

It is not an unprimeable number, because it can be changed into a prime (1425442237) 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 3 ways as a sum of consecutive naturals, for example, 237573703 + ... + 237573708.

It is an arithmetic number, because the mean of its divisors is an integer number (475147412).

Almost surely, 2^1425442233 is an apocalyptic number.

It is an amenable number.

1425442233 is a deficient number, since it is larger than the sum of its proper divisors (475147415).

1425442233 is an equidigital number, since it uses as much as digits as its factorization.

1425442233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475147414.

The product of its digits is 23040, while the sum is 30.

The square root of 1425442233 is about 37755.0292411488. The cubic root of 1425442233 is about 1125.4249543229.

Adding to 1425442233 its reverse (3322445241), we get a palindrome (4747887474).

The spelling of 1425442233 in words is "one billion, four hundred twenty-five million, four hundred forty-two thousand, two hundred thirty-three".