1285884375 has 48 divisors (see below), whose sum is σ = 2256105600. Its totient is φ = 649620000.

The previous prime is 1285884373. The next prime is 1285884401. The reversal of 1285884375 is 5734885821.

It is not a de Polignac number, because 1285884375 - 2¹ = 1285884373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1285884373) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 174516 + ... + 181734.

It is an arithmetic number, because the mean of its divisors is an integer number (47002200).

Almost surely, 2^1285884375 is an apocalyptic number.

1285884375 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1285884375 is a deficient number, since it is larger than the sum of its proper divisors (970221225).

1285884375 is an frugal number, since it uses more digits than its factorization.

1285884375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7266 (or 7246 counting only the distinct ones).

The product of its digits is 2150400, while the sum is 51.

The square root of 1285884375 is about 35859.2299833669. The cubic root of 1285884375 is about 1087.4283213425.

The spelling of 1285884375 in words is "one billion, two hundred eighty-five million, eight hundred eighty-four thousand, three hundred seventy-five".