1225123133 has 8 divisors (see below), whose sum is σ = 1319635968. Its totient is φ = 1130649264.

The previous prime is 1225123127. The next prime is 1225123199. The reversal of 1225123133 is 3313215221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1225123133 - 2⁴ = 1225123117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1225123099 and 1225123108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225143133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111860 + ... + 122322.

It is an arithmetic number, because the mean of its divisors is an integer number (164954496).

Almost surely, 2^1225123133 is an apocalyptic number.

1225123133 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1225123133 is a deficient number, since it is larger than the sum of its proper divisors (94512835).

1225123133 is a wasteful number, since it uses less digits than its factorization.

1225123133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19483.

The product of its digits is 1080, while the sum is 23.

The square root of 1225123133 is about 35001.7589986561. The cubic root of 1225123133 is about 1070.0233299132.

Adding to 1225123133 its reverse (3313215221), we get a palindrome (4538338354).

The spelling of 1225123133 in words is "one billion, two hundred twenty-five million, one hundred twenty-three thousand, one hundred thirty-three".