1252164473 has 6 divisors (see below), whose sum is σ = 1456599546. Its totient is φ = 1073283792.

The previous prime is 1252164451. The next prime is 1252164479. The reversal of 1252164473 is 3744612521.

It can be written as a sum of positive squares in only one way, i.e., 1193840704 + 58323769 = 34552^2 + 7637^2 .

It is not a de Polignac number, because 1252164473 - 2²⁰ = 1251115897 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1252164479) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12777140 + ... + 12777237.

It is an arithmetic number, because the mean of its divisors is an integer number (242766591).

Almost surely, 2^1252164473 is an apocalyptic number.

It is an amenable number.

1252164473 is a deficient number, since it is larger than the sum of its proper divisors (204435073).

1252164473 is an equidigital number, since it uses as much as digits as its factorization.

1252164473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25554391 (or 25554384 counting only the distinct ones).

The product of its digits is 40320, while the sum is 35.

The square root of 1252164473 is about 35385.9360904866. The cubic root of 1252164473 is about 1077.8387485798.

Adding to 1252164473 its reverse (3744612521), we get a palindrome (4996776994).

The spelling of 1252164473 in words is "one billion, two hundred fifty-two million, one hundred sixty-four thousand, four hundred seventy-three".