1259778222 has 24 divisors (see below), whose sum is σ = 2774268120. Its totient is φ = 413041680.

The previous prime is 1259778211. The next prime is 1259778227. The reversal of 1259778222 is 2228779521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1259778227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 572572 + ... + 574767.

It is an arithmetic number, because the mean of its divisors is an integer number (115594505).

Almost surely, 2^1259778222 is an apocalyptic number.

1259778222 is an abundant number, since it is smaller than the sum of its proper divisors (1514489898).

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

1259778222 is a wasteful number, since it uses less digits than its factorization.

1259778222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1147408 (or 1147405 counting only the distinct ones).

The product of its digits is 282240, while the sum is 45.

The square root of 1259778222 is about 35493.3546174492. The cubic root of 1259778222 is about 1080.0189245655.

The spelling of 1259778222 in words is "one billion, two hundred fifty-nine million, seven hundred seventy-eight thousand, two hundred twenty-two".