255136222 has 8 divisors (see below), whose sum is σ = 417495672. Its totient is φ = 115971000.

The previous prime is 255136213. The next prime is 255136249. The reversal of 255136222 is 222631552.

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

It is a congruent number.

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, 5798529 + ... + 5798572.

It is an arithmetic number, because the mean of its divisors is an integer number (52186959).

Almost surely, 2^255136222 is an apocalyptic number.

255136222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

255136222 is a deficient number, since it is larger than the sum of its proper divisors (162359450).

255136222 is a wasteful number, since it uses less digits than its factorization.

255136222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11597114.

The product of its digits is 7200, while the sum is 28.

The square root of 255136222 is about 15972.9841294606. The cubic root of 255136222 is about 634.2454691393.

Adding to 255136222 its reverse (222631552), we get a palindrome (477767774).

The spelling of 255136222 in words is "two hundred fifty-five million, one hundred thirty-six thousand, two hundred twenty-two".