1225145033 has 4 divisors (see below), whose sum is σ = 1400165760. Its totient is φ = 1050124308.

The previous prime is 1225145029. The next prime is 1225145039. The reversal of 1225145033 is 3305415221.

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 1225145033 - 2² = 1225145029 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1225144993 and 1225145011.

It is not an unprimeable number, because it can be changed into a prime (1225145039) 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 3 ways as a sum of consecutive naturals, for example, 87510353 + ... + 87510366.

It is an arithmetic number, because the mean of its divisors is an integer number (350041440).

Almost surely, 2^1225145033 is an apocalyptic number.

It is an amenable number.

1225145033 is a deficient number, since it is larger than the sum of its proper divisors (175020727).

1225145033 is an equidigital number, since it uses as much as digits as its factorization.

1225145033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175020726.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 1225145033 is about 35002.0718386783. The cubic root of 1225145033 is about 1070.0297056999.

The spelling of 1225145033 in words is "one billion, two hundred twenty-five million, one hundred forty-five thousand, thirty-three".