1225445115 has 16 divisors (see below), whose sum is σ = 1971549216. Its totient is φ = 649958400.

The previous prime is 1225445107. The next prime is 1225445189. The reversal of 1225445115 is 5115445221.

It is not a de Polignac number, because 1225445115 - 2³ = 1225445107 is a prime.

It is a super-4 number, since 4×1225445115⁴ (a number of 37 digits) contains 4444 as substring.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 222966 + ... + 228395.

It is an arithmetic number, because the mean of its divisors is an integer number (123221826).

Almost surely, 2^1225445115 is an apocalyptic number.

1225445115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1225445115 is a deficient number, since it is larger than the sum of its proper divisors (746104101).

1225445115 is a wasteful number, since it uses less digits than its factorization.

1225445115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451550.

The product of its digits is 8000, while the sum is 30.

The square root of 1225445115 is about 35006.3582081884. The cubic root of 1225445115 is about 1070.1170614640.

The spelling of 1225445115 in words is "one billion, two hundred twenty-five million, four hundred forty-five thousand, one hundred fifteen".