1251924222 has 32 divisors (see below), whose sum is σ = 2528347680. Its totient is φ = 413245440.

The previous prime is 1251924173. The next prime is 1251924227. The reversal of 1251924222 is 2224291521.

It is a self number, because there is not a number n which added to its sum of digits gives 1251924222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1251924227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 262822 + ... + 267542.

It is an arithmetic number, because the mean of its divisors is an integer number (79010865).

Almost surely, 2^1251924222 is an apocalyptic number.

1251924222 is an abundant number, since it is smaller than the sum of its proper divisors (1276423458).

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

1251924222 is a wasteful number, since it uses less digits than its factorization.

1251924222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5148.

The product of its digits is 5760, while the sum is 30.

The square root of 1251924222 is about 35382.5412032545. The cubic root of 1251924222 is about 1077.7698097127.

The spelling of 1251924222 in words is "one billion, two hundred fifty-one million, nine hundred twenty-four thousand, two hundred twenty-two".