1252828161 has 16 divisors (see below), whose sum is σ = 1998814720. Its totient is φ = 770970960.

The previous prime is 1252828133. The next prime is 1252828163. The reversal of 1252828161 is 1618282521.

It is not a de Polignac number, because 1252828161 - 2⁹ = 1252827649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1252828163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1784305 + ... + 1785006.

It is an arithmetic number, because the mean of its divisors is an integer number (124925920).

Almost surely, 2^1252828161 is an apocalyptic number.

It is an amenable number.

1252828161 is a deficient number, since it is larger than the sum of its proper divisors (745986559).

1252828161 is a wasteful number, since it uses less digits than its factorization.

1252828161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3569333 (or 3569327 counting only the distinct ones).

The product of its digits is 15360, while the sum is 36.

The square root of 1252828161 is about 35395.3126981526. The cubic root of 1252828161 is about 1078.0291448389.

The spelling of 1252828161 in words is "one billion, two hundred fifty-two million, eight hundred twenty-eight thousand, one hundred sixty-one".