1252845385 has 16 divisors (see below), whose sum is σ = 1696645440. Its totient is φ = 879739840.

The previous prime is 1252845371. The next prime is 1252845403. The reversal of 1252845385 is 5835482521.

It is not a de Polignac number, because 1252845385 - 2²⁵ = 1219290953 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, 391147 + ... + 394336.

It is an arithmetic number, because the mean of its divisors is an integer number (106040340).

Almost surely, 2^1252845385 is an apocalyptic number.

It is an amenable number.

1252845385 is a deficient number, since it is larger than the sum of its proper divisors (443800055).

1252845385 is a wasteful number, since it uses less digits than its factorization.

1252845385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 785528.

The product of its digits is 384000, while the sum is 43.

The square root of 1252845385 is about 35395.5560063689. The cubic root of 1252845385 is about 1078.0340850985.

The spelling of 1252845385 in words is "one billion, two hundred fifty-two million, eight hundred forty-five thousand, three hundred eighty-five".