1222405254 has 36 divisors (see below), whose sum is σ = 3080962404. Its totient is φ = 349258392.

The previous prime is 1222405253. The next prime is 1222405267. The reversal of 1222405254 is 4525042221.

1222405254 is a `hidden beast` number, since 1 + 2 + 2 + 2 + 405 + 254 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222405253) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 692092 + ... + 693855.

It is an arithmetic number, because the mean of its divisors is an integer number (85582289).

Almost surely, 2^1222405254 is an apocalyptic number.

1222405254 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1222405254 is an abundant number, since it is smaller than the sum of its proper divisors (1858557150).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1222405254 is a wasteful number, since it uses less digits than its factorization.

1222405254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1385969 (or 1385959 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 1222405254 is about 34962.9125503011. The cubic root of 1222405254 is about 1069.2314783084.

Adding to 1222405254 its reverse (4525042221), we get a palindrome (5747447475).

The spelling of 1222405254 in words is "one billion, two hundred twenty-two million, four hundred five thousand, two hundred fifty-four".