1225735117 has 4 divisors (see below), whose sum is σ = 1228192000. Its totient is φ = 1223278236.

The previous prime is 1225735111. The next prime is 1225735129. The reversal of 1225735117 is 7115375221.

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: 7115375221 = 269 ⋅26451209.

It is a cyclic number.

It is not a de Polignac number, because 1225735117 - 2³ = 1225735109 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 (1225735111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1227693 + ... + 1228690.

It is an arithmetic number, because the mean of its divisors is an integer number (307048000).

Almost surely, 2^1225735117 is an apocalyptic number.

It is an amenable number.

1225735117 is a deficient number, since it is larger than the sum of its proper divisors (2456883).

1225735117 is an equidigital number, since it uses as much as digits as its factorization.

1225735117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2456882.

The product of its digits is 14700, while the sum is 34.

The square root of 1225735117 is about 35010.5000963997. The cubic root of 1225735117 is about 1070.2014693272.

It can be divided in two parts, 12257 and 35117, that added together give a palindrome (47374).

The spelling of 1225735117 in words is "one billion, two hundred twenty-five million, seven hundred thirty-five thousand, one hundred seventeen".