1252328785 has 16 divisors (see below), whose sum is σ = 1537580880. Its totient is φ = 978831360.

The previous prime is 1252328773. The next prime is 1252328821. The reversal of 1252328785 is 5878232521.

It can be written as a sum of positive squares in 8 ways, for example, as 338596801 + 913731984 = 18401^2 + 30228^2 .

It is not a de Polignac number, because 1252328785 - 2¹¹ = 1252326737 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54061 + ... + 73669.

It is an arithmetic number, because the mean of its divisors is an integer number (96098805).

Almost surely, 2^1252328785 is an apocalyptic number.

It is an amenable number.

1252328785 is a deficient number, since it is larger than the sum of its proper divisors (285252095).

1252328785 is a wasteful number, since it uses less digits than its factorization.

1252328785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19908.

The product of its digits is 268800, while the sum is 43.

The square root of 1252328785 is about 35388.2577276701. The cubic root of 1252328785 is about 1077.8858920390.

The spelling of 1252328785 in words is "one billion, two hundred fifty-two million, three hundred twenty-eight thousand, seven hundred eighty-five".