1225130133 has 4 divisors (see below), whose sum is σ = 1633506848. Its totient is φ = 816753420.

The previous prime is 1225130131. The next prime is 1225130141. The reversal of 1225130133 is 3310315221.

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: 3310315221 = 3 ⋅1103438407.

It is not a de Polignac number, because 1225130133 - 2¹ = 1225130131 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225130131) 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, 204188353 + ... + 204188358.

It is an arithmetic number, because the mean of its divisors is an integer number (408376712).

Almost surely, 2^1225130133 is an apocalyptic number.

It is an amenable number.

1225130133 is a deficient number, since it is larger than the sum of its proper divisors (408376715).

1225130133 is an equidigital number, since it uses as much as digits as its factorization.

1225130133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408376714.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 1225130133 is about 35001.8589934878. The cubic root of 1225130133 is about 1070.0253678441.

Adding to 1225130133 its reverse (3310315221), we get a palindrome (4535445354).

The spelling of 1225130133 in words is "one billion, two hundred twenty-five million, one hundred thirty thousand, one hundred thirty-three".