1252209472 has 28 divisors (see below), whose sum is σ = 2510482660. Its totient is φ = 619646976.

The previous prime is 1252209373. The next prime is 1252209479. The reversal of 1252209472 is 2749022521.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 478034496 + 774174976 = 21864^2 + 27824^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252209479) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94647 + ... + 107062.

It is an arithmetic number, because the mean of its divisors is an integer number (89660095).

Almost surely, 2^1252209472 is an apocalyptic number.

It is an amenable number.

1252209472 is an abundant number, since it is smaller than the sum of its proper divisors (1258273188).

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

1252209472 is an equidigital number, since it uses as much as digits as its factorization.

1252209472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201818 (or 201808 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 1252209472 is about 35386.5719164770. The cubic root of 1252209472 is about 1077.8516598455.

The spelling of 1252209472 in words is "one billion, two hundred fifty-two million, two hundred nine thousand, four hundred seventy-two".