1252226664 has 96 divisors (see below), whose sum is σ = 3867219720. Its totient is φ = 362631168.

The previous prime is 1252226663. The next prime is 1252226669. The reversal of 1252226664 is 4666222521.

It can be written as a sum of positive squares in 4 ways, for example, as 683404164 + 568822500 = 26142^2 + 23850^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1252226663) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23437 + ... + 55260.

Almost surely, 2^1252226664 is an apocalyptic number.

It is an amenable number.

1252226664 is an abundant number, since it is smaller than the sum of its proper divisors (2614993056).

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

1252226664 is a wasteful number, since it uses less digits than its factorization.

1252226664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78739 (or 78732 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 1252226664 is about 35386.8148326464. The cubic root of 1252226664 is about 1077.8565925508.

The spelling of 1252226664 in words is "one billion, two hundred fifty-two million, two hundred twenty-six thousand, six hundred sixty-four".