1225707633 has 20 divisors (see below), whose sum is σ = 1938703140. Its totient is φ = 769070592.

The previous prime is 1225707601. The next prime is 1225707643. The reversal of 1225707633 is 3367075221.

1225707633 is a `hidden beast` number, since 1 + 22 + 570 + 7 + 63 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 473193009 + 752514624 = 21753^2 + 27432^2 .

It is not a de Polignac number, because 1225707633 - 2⁵ = 1225707601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1225707643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 443688 + ... + 446441.

It is an arithmetic number, because the mean of its divisors is an integer number (96935157).

Almost surely, 2^1225707633 is an apocalyptic number.

It is an amenable number.

1225707633 is a deficient number, since it is larger than the sum of its proper divisors (712995507).

1225707633 is an equidigital number, since it uses as much as digits as its factorization.

1225707633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 890158 (or 890149 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 36.

The square root of 1225707633 is about 35010.1075833823. The cubic root of 1225707633 is about 1070.1934704166.

The spelling of 1225707633 in words is "one billion, two hundred twenty-five million, seven hundred seven thousand, six hundred thirty-three".