1225155035305 has 4 divisors (see below), whose sum is σ = 1470186042372. Its totient is φ = 980124028240.

The previous prime is 1225155035281. The next prime is 1225155035309. The reversal of 1225155035305 is 5035305515221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 478458573849 + 746696461456 = 691707^2 + 864116^2 .

It is not a de Polignac number, because 1225155035305 - 2³¹ = 1223007551657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1225155035309) 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, 122515503526 + ... + 122515503535.

It is an arithmetic number, because the mean of its divisors is an integer number (367546510593).

Almost surely, 2^{1225155035305} is an apocalyptic number.

It is an amenable number.

1225155035305 is a deficient number, since it is larger than the sum of its proper divisors (245031007067).

1225155035305 is an equidigital number, since it uses as much as digits as its factorization.

1225155035305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245031007066.

The product of its (nonzero) digits is 112500, while the sum is 37.

The spelling of 1225155035305 in words is "one trillion, two hundred twenty-five billion, one hundred fifty-five million, thirty-five thousand, three hundred five".