1255122218 has 8 divisors (see below), whose sum is σ = 2151638112. Its totient is φ = 537909516.

The previous prime is 1255122199. The next prime is 1255122221. The reversal of 1255122218 is 8122215521.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44825780 + ... + 44825807.

It is an arithmetic number, because the mean of its divisors is an integer number (268954764).

Almost surely, 2^1255122218 is an apocalyptic number.

1255122218 is a deficient number, since it is larger than the sum of its proper divisors (896515894).

1255122218 is an equidigital number, since it uses as much as digits as its factorization.

1255122218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89651596.

The product of its digits is 3200, while the sum is 29.

The square root of 1255122218 is about 35427.7041028628. The cubic root of 1255122218 is about 1078.6867376466.

Adding to 1255122218 its reverse (8122215521), we get a palindrome (9377337739).

The spelling of 1255122218 in words is "one billion, two hundred fifty-five million, one hundred twenty-two thousand, two hundred eighteen".