1225440055 has 16 divisors (see below), whose sum is σ = 1769057280. Its totient is φ = 796074912.

The previous prime is 1225440001. The next prime is 1225440059. The reversal of 1225440055 is 5500445221.

It is a cyclic number.

It is not a de Polignac number, because 1225440055 - 2²³ = 1217051447 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225440059) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 920719 + ... + 922048.

It is an arithmetic number, because the mean of its divisors is an integer number (110566080).

Almost surely, 2^1225440055 is an apocalyptic number.

1225440055 is a deficient number, since it is larger than the sum of its proper divisors (543617225).

1225440055 is a wasteful number, since it uses less digits than its factorization.

1225440055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1842798.

The product of its (nonzero) digits is 8000, while the sum is 28.

The square root of 1225440055 is about 35006.2859355288. The cubic root of 1225440055 is about 1070.1155885843.

Adding to 1225440055 its reverse (5500445221), we get a palindrome (6725885276).

The spelling of 1225440055 in words is "one billion, two hundred twenty-five million, four hundred forty thousand, fifty-five".