1225322755 has 4 divisors (see below), whose sum is σ = 1470387312. Its totient is φ = 980258200.

The previous prime is 1225322731. The next prime is 1225322773. The reversal of 1225322755 is 5572235221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5572235221 = 7 ⋅796033603.

It is not a de Polignac number, because 1225322755 - 2¹⁹ = 1224798467 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1225322755.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122532271 + ... + 122532280.

It is an arithmetic number, because the mean of its divisors is an integer number (367596828).

Almost surely, 2^1225322755 is an apocalyptic number.

1225322755 is a deficient number, since it is larger than the sum of its proper divisors (245064557).

1225322755 is an equidigital number, since it uses as much as digits as its factorization.

1225322755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245064556.

The product of its digits is 42000, while the sum is 34.

The square root of 1225322755 is about 35004.6104820494. The cubic root of 1225322755 is about 1070.0814434179.

Adding to 1225322755 its reverse (5572235221), we get a palindrome (6797557976).

The spelling of 1225322755 in words is "one billion, two hundred twenty-five million, three hundred twenty-two thousand, seven hundred fifty-five".