1225222654 has 4 divisors (see below), whose sum is σ = 1837833984. Its totient is φ = 612611326.

The previous prime is 1225222577. The next prime is 1225222681. The reversal of 1225222654 is 4562225221.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 306305662 + ... + 306305665.

It is an arithmetic number, because the mean of its divisors is an integer number (459458496).

Almost surely, 2^1225222654 is an apocalyptic number.

1225222654 is a deficient number, since it is larger than the sum of its proper divisors (612611330).

1225222654 is an equidigital number, since it uses as much as digits as its factorization.

1225222654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612611329.

The product of its digits is 19200, while the sum is 31.

The square root of 1225222654 is about 35003.1806269087. The cubic root of 1225222654 is about 1070.0523030304.

Adding to 1225222654 its reverse (4562225221), we get a palindrome (5787447875).

The spelling of 1225222654 in words is "one billion, two hundred twenty-five million, two hundred twenty-two thousand, six hundred fifty-four".