1225434433 has 4 divisors (see below), whose sum is σ = 1264964608. Its totient is φ = 1185904260.

The previous prime is 1225434407. The next prime is 1225434439. The reversal of 1225434433 is 3344345221.

It is a happy number.

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 cyclic number.

It is not a de Polignac number, because 1225434433 - 2⁹ = 1225433921 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 39530143 = 1225434433 / (1 + 2 + 2 + 5 + 4 + 3 + 4 + 4 + 3 + 3).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1225434395 and 1225434404.

It is not an unprimeable number, because it can be changed into a prime (1225434439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19765041 + ... + 19765102.

It is an arithmetic number, because the mean of its divisors is an integer number (316241152).

Almost surely, 2^1225434433 is an apocalyptic number.

It is an amenable number.

1225434433 is a deficient number, since it is larger than the sum of its proper divisors (39530175).

1225434433 is an equidigital number, since it uses as much as digits as its factorization.

1225434433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39530174.

The product of its digits is 34560, while the sum is 31.

The square root of 1225434433 is about 35006.2056355727. The cubic root of 1225434433 is about 1070.1139521112.

Adding to 1225434433 its reverse (3344345221), we get a palindrome (4569779654).

The spelling of 1225434433 in words is "one billion, two hundred twenty-five million, four hundred thirty-four thousand, four hundred thirty-three".