1225333333 has 4 divisors (see below), whose sum is σ = 1400380960. Its totient is φ = 1050285708.

The previous prime is 1225333331. The next prime is 1225333357. The reversal of 1225333333 is 3333335221.

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, and also an emirpimes, since its reverse is a distinct semiprime: 3333335221 = 229 ⋅14556049.

It is a cyclic number.

It is not a de Polignac number, because 1225333333 - 2¹ = 1225333331 is a prime.

It is a Duffinian number.

1225333333 is a modest number, since divided by 33333 gives 12253 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225333331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87523803 + ... + 87523816.

It is an arithmetic number, because the mean of its divisors is an integer number (350095240).

Almost surely, 2^1225333333 is an apocalyptic number.

It is an amenable number.

1225333333 is a deficient number, since it is larger than the sum of its proper divisors (175047627).

1225333333 is an equidigital number, since it uses as much as digits as its factorization.

1225333333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175047626.

The product of its digits is 14580, while the sum is 28.

The square root of 1225333333 is about 35004.7615761056. The cubic root of 1225333333 is about 1070.0845226852.

Adding to 1225333333 its reverse (3333335221), we get a palindrome (4558668554).

The spelling of 1225333333 in words is "one billion, two hundred twenty-five million, three hundred thirty-three thousand, three hundred thirty-three".